./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/theatreSquare.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/theatreSquare.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:42:11,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:42:11,171 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:42:11,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:42:11,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:42:11,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:42:11,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:42:11,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:42:11,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:42:11,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:42:11,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:42:11,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:42:11,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:42:11,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:42:11,203 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:42:11,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:42:11,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:42:11,204 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:42:11,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:42:11,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:42:11,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:42:11,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:42:11,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:42:11,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:42:11,204 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:42:11,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:42:11,205 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:42:11,205 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:42:11,205 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:42:11,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:42:11,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:42:11,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:42:11,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:42:11,205 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:42:11,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:42:11,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:42:11,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:42:11,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:42:11,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:42:11,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:42:11,206 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:42:11,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:42:11,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:42:11,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:42:11,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:42:11,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:42:11,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:42:11,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:42:11,207 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 [2024-12-02 15:42:11,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:42:11,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:42:11,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:42:11,478 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:42:11,478 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:42:11,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-12-02 15:42:14,142 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/data/9afffa3e0/da8bb0db32e14fb6a067f583db57a728/FLAG9d79b17ac [2024-12-02 15:42:14,347 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:42:14,348 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-12-02 15:42:14,357 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/data/9afffa3e0/da8bb0db32e14fb6a067f583db57a728/FLAG9d79b17ac [2024-12-02 15:42:14,380 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/data/9afffa3e0/da8bb0db32e14fb6a067f583db57a728 [2024-12-02 15:42:14,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:42:14,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:42:14,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:42:14,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:42:14,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:42:14,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4b39ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14, skipping insertion in model container [2024-12-02 15:42:14,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,411 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:42:14,565 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/sv-benchmarks/c/loops-crafted-1/theatreSquare.c[370,383] [2024-12-02 15:42:14,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:42:14,599 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:42:14,610 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/sv-benchmarks/c/loops-crafted-1/theatreSquare.c[370,383] [2024-12-02 15:42:14,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:42:14,635 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:42:14,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14 WrapperNode [2024-12-02 15:42:14,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:42:14,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:42:14,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:42:14,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:42:14,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,665 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-12-02 15:42:14,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:42:14,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:42:14,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:42:14,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:42:14,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,682 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 15:42:14,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,685 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:42:14,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:42:14,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:42:14,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:42:14,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (1/1) ... [2024-12-02 15:42:14,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:42:14,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:14,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:42:14,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:42:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:42:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:42:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:42:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:42:14,806 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:42:14,807 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:42:14,981 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-12-02 15:42:14,981 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:42:14,990 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:42:14,990 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 15:42:14,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:42:14 BoogieIcfgContainer [2024-12-02 15:42:14,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:42:14,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:42:14,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:42:14,997 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:42:14,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:42:14" (1/3) ... [2024-12-02 15:42:14,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1783b1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:42:14, skipping insertion in model container [2024-12-02 15:42:14,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:14" (2/3) ... [2024-12-02 15:42:14,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1783b1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:42:14, skipping insertion in model container [2024-12-02 15:42:14,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:42:14" (3/3) ... [2024-12-02 15:42:15,000 INFO L128 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2024-12-02 15:42:15,013 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:42:15,015 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG theatreSquare.c that has 1 procedures, 29 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-12-02 15:42:15,063 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:42:15,075 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c5aaa50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:42:15,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:42:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 15:42:15,083 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:15,083 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 15:42:15,083 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:15,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:15,088 INFO L85 PathProgramCache]: Analyzing trace with hash 892154151, now seen corresponding path program 1 times [2024-12-02 15:42:15,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:15,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741642563] [2024-12-02 15:42:15,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:15,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:42:15,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:15,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741642563] [2024-12-02 15:42:15,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741642563] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:15,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:15,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:42:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126187276] [2024-12-02 15:42:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:15,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:42:15,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:15,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:42:15,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:15,315 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:15,347 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2024-12-02 15:42:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:42:15,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-12-02 15:42:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:15,356 INFO L225 Difference]: With dead ends: 55 [2024-12-02 15:42:15,357 INFO L226 Difference]: Without dead ends: 25 [2024-12-02 15:42:15,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:15,364 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:15,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 80 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-12-02 15:42:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-12-02 15:42:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-12-02 15:42:15,392 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 6 [2024-12-02 15:42:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:15,392 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-12-02 15:42:15,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-12-02 15:42:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 15:42:15,393 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:15,393 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:15,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:42:15,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:15,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:15,394 INFO L85 PathProgramCache]: Analyzing trace with hash 951555857, now seen corresponding path program 1 times [2024-12-02 15:42:15,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:15,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112673736] [2024-12-02 15:42:15,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:15,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:42:15,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:15,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112673736] [2024-12-02 15:42:15,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112673736] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:15,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:15,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:42:15,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109883615] [2024-12-02 15:42:15,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:15,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:42:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:15,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:42:15,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:42:15,648 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:15,768 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2024-12-02 15:42:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:42:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-12-02 15:42:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:15,769 INFO L225 Difference]: With dead ends: 47 [2024-12-02 15:42:15,769 INFO L226 Difference]: Without dead ends: 41 [2024-12-02 15:42:15,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:42:15,770 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:15,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 170 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-12-02 15:42:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2024-12-02 15:42:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-12-02 15:42:15,777 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 18 [2024-12-02 15:42:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:15,777 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-12-02 15:42:15,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-12-02 15:42:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 15:42:15,778 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:15,778 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:15,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:42:15,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:15,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:15,779 INFO L85 PathProgramCache]: Analyzing trace with hash 964126069, now seen corresponding path program 1 times [2024-12-02 15:42:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:15,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332312489] [2024-12-02 15:42:15,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:15,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:42:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332312489] [2024-12-02 15:42:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332312489] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:15,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:15,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:42:15,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287504143] [2024-12-02 15:42:15,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:15,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:42:15,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:15,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:42:15,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:15,855 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:15,880 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2024-12-02 15:42:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:42:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-12-02 15:42:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:15,881 INFO L225 Difference]: With dead ends: 57 [2024-12-02 15:42:15,881 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 15:42:15,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:15,883 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:15,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 15:42:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-12-02 15:42:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-12-02 15:42:15,890 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 20 [2024-12-02 15:42:15,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:15,890 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-12-02 15:42:15,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,891 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-12-02 15:42:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 15:42:15,891 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:15,891 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:15,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:42:15,892 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:15,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:15,892 INFO L85 PathProgramCache]: Analyzing trace with hash 936659125, now seen corresponding path program 1 times [2024-12-02 15:42:15,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:15,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339385208] [2024-12-02 15:42:15,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:15,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:42:15,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:15,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339385208] [2024-12-02 15:42:15,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339385208] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:15,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:15,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:42:15,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635978182] [2024-12-02 15:42:15,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:15,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:42:15,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:15,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:42:15,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:15,962 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:15,987 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2024-12-02 15:42:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:42:15,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-12-02 15:42:15,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:15,988 INFO L225 Difference]: With dead ends: 59 [2024-12-02 15:42:15,988 INFO L226 Difference]: Without dead ends: 47 [2024-12-02 15:42:15,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:15,989 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:15,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:15,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-12-02 15:42:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-12-02 15:42:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-12-02 15:42:15,997 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 20 [2024-12-02 15:42:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:15,997 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-12-02 15:42:15,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:15,997 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-12-02 15:42:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 15:42:15,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:15,998 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:15,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:42:15,999 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:15,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash -14980847, now seen corresponding path program 1 times [2024-12-02 15:42:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931103993] [2024-12-02 15:42:15,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:16,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:16,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931103993] [2024-12-02 15:42:16,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931103993] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:16,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:16,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:42:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073070362] [2024-12-02 15:42:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:16,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:42:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:16,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:42:16,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:42:16,073 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:16,094 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2024-12-02 15:42:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:42:16,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-12-02 15:42:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:16,096 INFO L225 Difference]: With dead ends: 84 [2024-12-02 15:42:16,096 INFO L226 Difference]: Without dead ends: 49 [2024-12-02 15:42:16,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:42:16,097 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:16,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-12-02 15:42:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-12-02 15:42:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-12-02 15:42:16,106 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 22 [2024-12-02 15:42:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:16,106 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-12-02 15:42:16,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-12-02 15:42:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 15:42:16,107 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:16,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:16,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:42:16,107 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:16,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash 351989301, now seen corresponding path program 1 times [2024-12-02 15:42:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:16,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364703720] [2024-12-02 15:42:16,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 15:42:16,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:16,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364703720] [2024-12-02 15:42:16,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364703720] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:16,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:16,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:42:16,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344661997] [2024-12-02 15:42:16,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:16,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:42:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:16,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:42:16,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:16,198 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:16,223 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-12-02 15:42:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:42:16,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-02 15:42:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:16,224 INFO L225 Difference]: With dead ends: 55 [2024-12-02 15:42:16,224 INFO L226 Difference]: Without dead ends: 45 [2024-12-02 15:42:16,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:16,225 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:16,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-12-02 15:42:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-12-02 15:42:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-12-02 15:42:16,233 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 24 [2024-12-02 15:42:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:16,233 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-12-02 15:42:16,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-12-02 15:42:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 15:42:16,234 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:16,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:16,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:42:16,234 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:16,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2069500747, now seen corresponding path program 1 times [2024-12-02 15:42:16,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:16,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951536651] [2024-12-02 15:42:16,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:16,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 15:42:16,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:16,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951536651] [2024-12-02 15:42:16,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951536651] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:16,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:16,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:42:16,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314369622] [2024-12-02 15:42:16,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:16,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:42:16,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:16,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:42:16,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:42:16,305 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:16,318 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2024-12-02 15:42:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:42:16,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-02 15:42:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:16,319 INFO L225 Difference]: With dead ends: 61 [2024-12-02 15:42:16,319 INFO L226 Difference]: Without dead ends: 39 [2024-12-02 15:42:16,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:42:16,320 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:16,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-12-02 15:42:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-12-02 15:42:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-12-02 15:42:16,327 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2024-12-02 15:42:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:16,327 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-12-02 15:42:16,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-12-02 15:42:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 15:42:16,328 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:16,328 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:16,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:42:16,329 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:16,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash -6660847, now seen corresponding path program 1 times [2024-12-02 15:42:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699914322] [2024-12-02 15:42:16,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:16,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:16,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699914322] [2024-12-02 15:42:16,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699914322] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:16,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:16,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:42:16,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471845941] [2024-12-02 15:42:16,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:16,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:42:16,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:16,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:42:16,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:16,404 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:16,424 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-12-02 15:42:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:42:16,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-12-02 15:42:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:16,425 INFO L225 Difference]: With dead ends: 53 [2024-12-02 15:42:16,425 INFO L226 Difference]: Without dead ends: 42 [2024-12-02 15:42:16,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:42:16,426 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:16,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 63 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:16,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-12-02 15:42:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-12-02 15:42:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-12-02 15:42:16,433 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 26 [2024-12-02 15:42:16,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:16,434 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-12-02 15:42:16,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-12-02 15:42:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-02 15:42:16,434 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:16,434 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:16,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:42:16,435 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:16,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1477671563, now seen corresponding path program 1 times [2024-12-02 15:42:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:16,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225923189] [2024-12-02 15:42:16,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:16,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:16,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225923189] [2024-12-02 15:42:16,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225923189] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:16,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973320268] [2024-12-02 15:42:16,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:16,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:16,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:16,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:16,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:42:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:16,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 15:42:16,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:16,656 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:42:16,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973320268] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:16,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:42:16,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 15:42:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467702077] [2024-12-02 15:42:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:16,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:42:16,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:16,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:42:16,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:42:16,658 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:16,679 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2024-12-02 15:42:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:42:16,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-12-02 15:42:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:16,680 INFO L225 Difference]: With dead ends: 50 [2024-12-02 15:42:16,680 INFO L226 Difference]: Without dead ends: 44 [2024-12-02 15:42:16,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:42:16,681 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:16,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:16,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-12-02 15:42:16,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2024-12-02 15:42:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-12-02 15:42:16,687 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 28 [2024-12-02 15:42:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:16,687 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-12-02 15:42:16,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-12-02 15:42:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-02 15:42:16,688 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:16,688 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:16,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:42:16,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:16,889 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:16,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1978537291, now seen corresponding path program 1 times [2024-12-02 15:42:16,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:16,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730448806] [2024-12-02 15:42:16,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:16,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:16,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730448806] [2024-12-02 15:42:16,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730448806] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196462188] [2024-12-02 15:42:16,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:16,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:16,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:16,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:16,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:42:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:17,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 15:42:17,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:17,080 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:42:17,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196462188] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:17,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:42:17,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 15:42:17,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304821206] [2024-12-02 15:42:17,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:17,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:42:17,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:17,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:42:17,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:42:17,081 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:17,103 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-12-02 15:42:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:42:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-12-02 15:42:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:17,104 INFO L225 Difference]: With dead ends: 51 [2024-12-02 15:42:17,104 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 15:42:17,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:42:17,105 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:17,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 88 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 15:42:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-12-02 15:42:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-12-02 15:42:17,110 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 28 [2024-12-02 15:42:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:17,110 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-12-02 15:42:17,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-12-02 15:42:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-02 15:42:17,111 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:17,111 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:17,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:42:17,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 15:42:17,311 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:17,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1383649767, now seen corresponding path program 1 times [2024-12-02 15:42:17,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:17,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739163265] [2024-12-02 15:42:17,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:17,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739163265] [2024-12-02 15:42:17,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739163265] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049101452] [2024-12-02 15:42:17,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:17,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:17,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:17,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:17,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:42:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:17,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 15:42:17,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:17,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:18,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049101452] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:18,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:18,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-12-02 15:42:18,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563284660] [2024-12-02 15:42:18,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:18,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:42:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:18,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:42:18,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:42:18,039 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:18,303 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-12-02 15:42:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:42:18,304 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-12-02 15:42:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:18,304 INFO L225 Difference]: With dead ends: 67 [2024-12-02 15:42:18,304 INFO L226 Difference]: Without dead ends: 61 [2024-12-02 15:42:18,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:42:18,306 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 54 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:18,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 401 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:18,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-12-02 15:42:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2024-12-02 15:42:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-12-02 15:42:18,313 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 30 [2024-12-02 15:42:18,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:18,313 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-12-02 15:42:18,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-12-02 15:42:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-02 15:42:18,314 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:18,314 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:18,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:42:18,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 15:42:18,515 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:18,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash -609136835, now seen corresponding path program 2 times [2024-12-02 15:42:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:18,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289204288] [2024-12-02 15:42:18,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:18,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:18,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:18,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:18,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:18,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289204288] [2024-12-02 15:42:18,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289204288] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:18,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765530728] [2024-12-02 15:42:18,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:18,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:18,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:18,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:18,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:42:18,755 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:18,755 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:18,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 15:42:18,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:18,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:19,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765530728] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:19,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:19,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-12-02 15:42:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726810851] [2024-12-02 15:42:19,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:19,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:42:19,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:19,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:42:19,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:42:19,033 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:19,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:19,156 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2024-12-02 15:42:19,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:42:19,157 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-12-02 15:42:19,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:19,158 INFO L225 Difference]: With dead ends: 69 [2024-12-02 15:42:19,159 INFO L226 Difference]: Without dead ends: 59 [2024-12-02 15:42:19,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:42:19,159 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:19,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 203 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-12-02 15:42:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-12-02 15:42:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-12-02 15:42:19,168 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 32 [2024-12-02 15:42:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:19,168 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-12-02 15:42:19,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-12-02 15:42:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-02 15:42:19,169 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:19,169 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:19,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 15:42:19,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 15:42:19,370 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:19,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash -927389571, now seen corresponding path program 3 times [2024-12-02 15:42:19,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:19,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643334672] [2024-12-02 15:42:19,371 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:19,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:19,385 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 15:42:19,385 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:19,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643334672] [2024-12-02 15:42:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643334672] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152980258] [2024-12-02 15:42:19,435 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:19,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:19,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:19,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:19,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:42:19,494 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 15:42:19,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:19,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 15:42:19,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:19,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:19,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152980258] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:19,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:19,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 15:42:19,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744247881] [2024-12-02 15:42:19,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:19,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:42:19,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:19,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:42:19,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:42:19,574 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:19,601 INFO L93 Difference]: Finished difference Result 102 states and 123 transitions. [2024-12-02 15:42:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:42:19,602 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-12-02 15:42:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:19,602 INFO L225 Difference]: With dead ends: 102 [2024-12-02 15:42:19,603 INFO L226 Difference]: Without dead ends: 73 [2024-12-02 15:42:19,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:42:19,603 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:19,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 91 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-12-02 15:42:19,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2024-12-02 15:42:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 71 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2024-12-02 15:42:19,614 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 32 [2024-12-02 15:42:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:19,615 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2024-12-02 15:42:19,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2024-12-02 15:42:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-02 15:42:19,615 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:19,615 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:19,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 15:42:19,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 15:42:19,816 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:19,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:19,817 INFO L85 PathProgramCache]: Analyzing trace with hash 369525885, now seen corresponding path program 4 times [2024-12-02 15:42:19,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:19,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884302296] [2024-12-02 15:42:19,817 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:19,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:19,833 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:19,833 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:19,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:19,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884302296] [2024-12-02 15:42:19,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884302296] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:19,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190186813] [2024-12-02 15:42:19,939 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:19,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:19,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:19,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:19,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:42:20,011 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:20,011 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:20,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 15:42:20,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:20,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:20,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190186813] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:20,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:20,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-12-02 15:42:20,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893589202] [2024-12-02 15:42:20,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:20,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:42:20,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:20,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:42:20,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:42:20,226 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:20,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:20,289 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2024-12-02 15:42:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:42:20,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-12-02 15:42:20,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:20,290 INFO L225 Difference]: With dead ends: 89 [2024-12-02 15:42:20,290 INFO L226 Difference]: Without dead ends: 77 [2024-12-02 15:42:20,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:42:20,291 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:20,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 119 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:20,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-12-02 15:42:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-12-02 15:42:20,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 74 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2024-12-02 15:42:20,300 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 32 [2024-12-02 15:42:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:20,300 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2024-12-02 15:42:20,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2024-12-02 15:42:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-02 15:42:20,301 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:20,301 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:20,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 15:42:20,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 15:42:20,502 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:20,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:20,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1223017027, now seen corresponding path program 5 times [2024-12-02 15:42:20,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:20,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146037865] [2024-12-02 15:42:20,503 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:20,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:20,514 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 15:42:20,514 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146037865] [2024-12-02 15:42:20,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146037865] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65577071] [2024-12-02 15:42:20,554 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:20,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:20,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:20,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:20,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:42:20,615 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 15:42:20,615 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:20,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 15:42:20,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:20,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:20,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65577071] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:20,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:20,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-12-02 15:42:20,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601625625] [2024-12-02 15:42:20,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:20,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:42:20,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:20,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:42:20,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:42:20,689 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:20,716 INFO L93 Difference]: Finished difference Result 111 states and 129 transitions. [2024-12-02 15:42:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:42:20,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-12-02 15:42:20,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:20,718 INFO L225 Difference]: With dead ends: 111 [2024-12-02 15:42:20,718 INFO L226 Difference]: Without dead ends: 96 [2024-12-02 15:42:20,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:42:20,719 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:20,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 80 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-12-02 15:42:20,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2024-12-02 15:42:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.184782608695652) internal successors, (109), 92 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2024-12-02 15:42:20,728 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 32 [2024-12-02 15:42:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:20,729 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2024-12-02 15:42:20,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2024-12-02 15:42:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 15:42:20,729 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:20,729 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:20,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 15:42:20,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 15:42:20,930 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:20,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash 424190489, now seen corresponding path program 6 times [2024-12-02 15:42:20,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:20,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254656828] [2024-12-02 15:42:20,930 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:20,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:20,947 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 15:42:20,947 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:42:21,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:21,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254656828] [2024-12-02 15:42:21,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254656828] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:21,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921144918] [2024-12-02 15:42:21,085 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:21,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:21,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:21,087 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:21,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 15:42:21,146 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 15:42:21,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:21,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 15:42:21,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:42:21,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:42:21,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921144918] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:21,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:21,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-12-02 15:42:21,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932027207] [2024-12-02 15:42:21,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:21,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:42:21,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:21,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:42:21,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:42:21,342 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:21,447 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2024-12-02 15:42:21,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:42:21,447 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-12-02 15:42:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:21,448 INFO L225 Difference]: With dead ends: 119 [2024-12-02 15:42:21,448 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 15:42:21,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:42:21,449 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:21,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 251 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 15:42:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2024-12-02 15:42:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 94 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2024-12-02 15:42:21,469 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 34 [2024-12-02 15:42:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:21,470 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2024-12-02 15:42:21,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:21,470 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2024-12-02 15:42:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 15:42:21,470 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:21,470 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:21,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 15:42:21,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 15:42:21,671 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:21,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:21,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1647111329, now seen corresponding path program 7 times [2024-12-02 15:42:21,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:21,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961087623] [2024-12-02 15:42:21,672 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:21,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:21,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:21,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961087623] [2024-12-02 15:42:21,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961087623] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:21,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098315322] [2024-12-02 15:42:21,925 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:21,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:21,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:21,927 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:21,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 15:42:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:21,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 15:42:21,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:22,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:22,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098315322] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:22,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:22,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 26 [2024-12-02 15:42:22,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918500160] [2024-12-02 15:42:22,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:22,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 15:42:22,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:22,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 15:42:22,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:42:22,348 INFO L87 Difference]: Start difference. First operand 95 states and 110 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:22,637 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2024-12-02 15:42:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:42:22,637 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-12-02 15:42:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:22,638 INFO L225 Difference]: With dead ends: 157 [2024-12-02 15:42:22,638 INFO L226 Difference]: Without dead ends: 147 [2024-12-02 15:42:22,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:42:22,639 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 68 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:22,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 663 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-12-02 15:42:22,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 126. [2024-12-02 15:42:22,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.176) internal successors, (147), 125 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2024-12-02 15:42:22,655 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 34 [2024-12-02 15:42:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:22,655 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2024-12-02 15:42:22,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2024-12-02 15:42:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 15:42:22,656 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:22,656 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:22,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 15:42:22,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 15:42:22,857 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:22,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:22,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1698369689, now seen corresponding path program 8 times [2024-12-02 15:42:22,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:22,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779699244] [2024-12-02 15:42:22,858 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:22,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:22,870 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:22,871 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 15:42:23,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:23,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779699244] [2024-12-02 15:42:23,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779699244] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:23,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667086958] [2024-12-02 15:42:23,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:23,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:23,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:23,021 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:23,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 15:42:23,083 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:23,083 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:23,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 15:42:23,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:42:23,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:42:23,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667086958] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:23,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:23,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-12-02 15:42:23,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341484983] [2024-12-02 15:42:23,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:23,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:42:23,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:23,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:42:23,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:42:23,258 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:23,342 INFO L93 Difference]: Finished difference Result 164 states and 190 transitions. [2024-12-02 15:42:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:42:23,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-12-02 15:42:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:23,344 INFO L225 Difference]: With dead ends: 164 [2024-12-02 15:42:23,344 INFO L226 Difference]: Without dead ends: 123 [2024-12-02 15:42:23,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:42:23,344 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:23,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 186 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-12-02 15:42:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2024-12-02 15:42:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 121 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions. [2024-12-02 15:42:23,359 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 34 [2024-12-02 15:42:23,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:23,359 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions. [2024-12-02 15:42:23,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:23,359 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions. [2024-12-02 15:42:23,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 15:42:23,360 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:23,360 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:23,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 15:42:23,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 15:42:23,561 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:23,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash -915702795, now seen corresponding path program 9 times [2024-12-02 15:42:23,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:23,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962125036] [2024-12-02 15:42:23,561 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:23,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:23,578 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 15:42:23,578 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:23,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:23,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962125036] [2024-12-02 15:42:23,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962125036] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:23,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863900385] [2024-12-02 15:42:23,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:23,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:23,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:23,636 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:23,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 15:42:23,700 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 15:42:23,700 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:23,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:42:23,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:23,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863900385] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:23,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:23,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-12-02 15:42:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159307453] [2024-12-02 15:42:23,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:23,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 15:42:23,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:23,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 15:42:23,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:42:23,802 INFO L87 Difference]: Start difference. First operand 122 states and 140 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:23,861 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2024-12-02 15:42:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:42:23,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-12-02 15:42:23,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:23,863 INFO L225 Difference]: With dead ends: 136 [2024-12-02 15:42:23,863 INFO L226 Difference]: Without dead ends: 130 [2024-12-02 15:42:23,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:42:23,864 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 27 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:23,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 104 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-12-02 15:42:23,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 91. [2024-12-02 15:42:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 90 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2024-12-02 15:42:23,877 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 36 [2024-12-02 15:42:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:23,878 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2024-12-02 15:42:23,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2024-12-02 15:42:23,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 15:42:23,878 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:23,878 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:23,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 15:42:24,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:24,079 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:24,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash -808283339, now seen corresponding path program 10 times [2024-12-02 15:42:24,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:24,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711104717] [2024-12-02 15:42:24,080 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:24,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:24,092 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:24,092 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:24,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:24,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711104717] [2024-12-02 15:42:24,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711104717] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:24,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319902977] [2024-12-02 15:42:24,143 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:24,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:24,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:24,145 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:24,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 15:42:24,211 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:24,211 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:24,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:42:24,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:24,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319902977] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:24,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:24,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-12-02 15:42:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47276138] [2024-12-02 15:42:24,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:24,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:42:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:24,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:42:24,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:42:24,289 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:24,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:24,342 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2024-12-02 15:42:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:42:24,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-12-02 15:42:24,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:24,343 INFO L225 Difference]: With dead ends: 132 [2024-12-02 15:42:24,343 INFO L226 Difference]: Without dead ends: 98 [2024-12-02 15:42:24,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:42:24,344 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 14 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:24,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 126 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:24,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-12-02 15:42:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2024-12-02 15:42:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 94 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2024-12-02 15:42:24,357 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 36 [2024-12-02 15:42:24,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:24,358 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2024-12-02 15:42:24,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:24,358 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2024-12-02 15:42:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 15:42:24,358 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:24,358 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:24,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 15:42:24,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:24,559 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:24,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:24,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1046076357, now seen corresponding path program 11 times [2024-12-02 15:42:24,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:24,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672338761] [2024-12-02 15:42:24,559 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:24,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:24,570 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-12-02 15:42:24,570 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:24,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:24,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672338761] [2024-12-02 15:42:24,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672338761] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:24,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328665669] [2024-12-02 15:42:24,702 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:24,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:24,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:24,704 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:24,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 15:42:24,773 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-12-02 15:42:24,774 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:24,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:42:24,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:24,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:25,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328665669] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:25,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:25,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-12-02 15:42:25,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943457511] [2024-12-02 15:42:25,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:25,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 15:42:25,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:25,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 15:42:25,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-12-02 15:42:25,162 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:25,394 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2024-12-02 15:42:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:42:25,394 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-12-02 15:42:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:25,395 INFO L225 Difference]: With dead ends: 140 [2024-12-02 15:42:25,395 INFO L226 Difference]: Without dead ends: 124 [2024-12-02 15:42:25,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:42:25,396 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:25,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 293 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-12-02 15:42:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2024-12-02 15:42:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.15) internal successors, (115), 100 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2024-12-02 15:42:25,413 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 36 [2024-12-02 15:42:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:25,413 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2024-12-02 15:42:25,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2024-12-02 15:42:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 15:42:25,414 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:25,414 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:25,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 15:42:25,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:25,615 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:25,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:25,615 INFO L85 PathProgramCache]: Analyzing trace with hash 943112453, now seen corresponding path program 12 times [2024-12-02 15:42:25,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:25,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893847601] [2024-12-02 15:42:25,615 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:25,631 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-12-02 15:42:25,631 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893847601] [2024-12-02 15:42:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893847601] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83851051] [2024-12-02 15:42:25,773 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:25,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:25,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:25,776 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:25,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 15:42:25,846 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-12-02 15:42:25,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:25,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:42:25,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:26,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:26,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83851051] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:26,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:26,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-12-02 15:42:26,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724292263] [2024-12-02 15:42:26,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:26,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:42:26,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:26,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:42:26,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:42:26,208 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:26,378 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2024-12-02 15:42:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:42:26,379 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-12-02 15:42:26,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:26,379 INFO L225 Difference]: With dead ends: 144 [2024-12-02 15:42:26,379 INFO L226 Difference]: Without dead ends: 110 [2024-12-02 15:42:26,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:42:26,381 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:26,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 231 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-12-02 15:42:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2024-12-02 15:42:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 104 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2024-12-02 15:42:26,403 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 36 [2024-12-02 15:42:26,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:26,403 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2024-12-02 15:42:26,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2024-12-02 15:42:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 15:42:26,404 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:26,404 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:26,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 15:42:26,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:26,604 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:26,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:26,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1797424281, now seen corresponding path program 13 times [2024-12-02 15:42:26,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:26,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045425089] [2024-12-02 15:42:26,605 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:26,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:26,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:26,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045425089] [2024-12-02 15:42:26,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045425089] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:26,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857750504] [2024-12-02 15:42:26,843 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:26,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:26,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:26,845 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:26,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 15:42:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:26,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 15:42:26,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:27,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:27,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857750504] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:27,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:27,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 27 [2024-12-02 15:42:27,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80779566] [2024-12-02 15:42:27,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:27,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 15:42:27,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:27,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 15:42:27,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2024-12-02 15:42:27,256 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:27,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:27,510 INFO L93 Difference]: Finished difference Result 135 states and 152 transitions. [2024-12-02 15:42:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:42:27,510 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 15:42:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:27,511 INFO L225 Difference]: With dead ends: 135 [2024-12-02 15:42:27,511 INFO L226 Difference]: Without dead ends: 129 [2024-12-02 15:42:27,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 15:42:27,512 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 53 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:27,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 474 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:27,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-12-02 15:42:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2024-12-02 15:42:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.1428571428571428) internal successors, (136), 119 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 136 transitions. [2024-12-02 15:42:27,543 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 136 transitions. Word has length 38 [2024-12-02 15:42:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:27,544 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 136 transitions. [2024-12-02 15:42:27,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 136 transitions. [2024-12-02 15:42:27,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 15:42:27,544 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:27,544 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:27,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 15:42:27,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:27,745 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:27,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1125877975, now seen corresponding path program 14 times [2024-12-02 15:42:27,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:27,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518469984] [2024-12-02 15:42:27,745 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:27,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:27,757 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:27,758 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:28,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:28,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518469984] [2024-12-02 15:42:28,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518469984] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:28,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422261912] [2024-12-02 15:42:28,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:28,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:28,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:28,055 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:28,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 15:42:28,116 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:28,116 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:28,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 15:42:28,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:28,290 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:28,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:28,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422261912] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:28,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:28,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 29 [2024-12-02 15:42:28,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218538420] [2024-12-02 15:42:28,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:28,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 15:42:28,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:28,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 15:42:28,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:42:28,442 INFO L87 Difference]: Start difference. First operand 120 states and 136 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:28,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:28,754 INFO L93 Difference]: Finished difference Result 162 states and 181 transitions. [2024-12-02 15:42:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 15:42:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 15:42:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:28,755 INFO L225 Difference]: With dead ends: 162 [2024-12-02 15:42:28,755 INFO L226 Difference]: Without dead ends: 152 [2024-12-02 15:42:28,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 15:42:28,755 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 69 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:28,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 888 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-12-02 15:42:28,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 133. [2024-12-02 15:42:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.1363636363636365) internal successors, (150), 132 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2024-12-02 15:42:28,772 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 38 [2024-12-02 15:42:28,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:28,772 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2024-12-02 15:42:28,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2024-12-02 15:42:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 15:42:28,773 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:28,773 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:28,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 15:42:28,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:28,973 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:28,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1916513533, now seen corresponding path program 15 times [2024-12-02 15:42:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649050635] [2024-12-02 15:42:28,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:28,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:28,991 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 15:42:28,991 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:29,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649050635] [2024-12-02 15:42:29,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649050635] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891884953] [2024-12-02 15:42:29,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:29,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:29,055 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:29,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 15:42:29,127 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 15:42:29,127 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:29,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 15:42:29,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:29,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:29,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891884953] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:29,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:29,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-12-02 15:42:29,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671005639] [2024-12-02 15:42:29,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:29,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:42:29,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:29,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:42:29,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:42:29,233 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:29,300 INFO L93 Difference]: Finished difference Result 212 states and 243 transitions. [2024-12-02 15:42:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:42:29,300 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 15:42:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:29,301 INFO L225 Difference]: With dead ends: 212 [2024-12-02 15:42:29,301 INFO L226 Difference]: Without dead ends: 161 [2024-12-02 15:42:29,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:42:29,302 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:29,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 127 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-12-02 15:42:29,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2024-12-02 15:42:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.1383647798742138) internal successors, (181), 159 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 181 transitions. [2024-12-02 15:42:29,328 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 181 transitions. Word has length 40 [2024-12-02 15:42:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:29,328 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 181 transitions. [2024-12-02 15:42:29,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:29,328 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 181 transitions. [2024-12-02 15:42:29,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 15:42:29,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:29,329 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:29,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 15:42:29,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:29,529 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:29,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2067395645, now seen corresponding path program 16 times [2024-12-02 15:42:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:29,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072782422] [2024-12-02 15:42:29,530 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:29,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:29,539 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:29,539 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:29,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:29,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072782422] [2024-12-02 15:42:29,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072782422] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:29,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781561744] [2024-12-02 15:42:29,597 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:29,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:29,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:29,599 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:29,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 15:42:29,666 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:29,666 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:29,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 15:42:29,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:29,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 15:42:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781561744] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:29,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-12-02 15:42:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965234771] [2024-12-02 15:42:29,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:29,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 15:42:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:29,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 15:42:29,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:42:29,752 INFO L87 Difference]: Start difference. First operand 160 states and 181 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:29,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:29,821 INFO L93 Difference]: Finished difference Result 207 states and 234 transitions. [2024-12-02 15:42:29,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:42:29,821 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 15:42:29,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:29,822 INFO L225 Difference]: With dead ends: 207 [2024-12-02 15:42:29,823 INFO L226 Difference]: Without dead ends: 190 [2024-12-02 15:42:29,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:42:29,823 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:29,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 95 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-12-02 15:42:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 183. [2024-12-02 15:42:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.1428571428571428) internal successors, (208), 182 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2024-12-02 15:42:29,855 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 40 [2024-12-02 15:42:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:29,855 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2024-12-02 15:42:29,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2024-12-02 15:42:29,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 15:42:29,856 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:29,856 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:29,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 15:42:30,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:30,056 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:30,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash -855821235, now seen corresponding path program 17 times [2024-12-02 15:42:30,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:30,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585242893] [2024-12-02 15:42:30,057 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:30,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:30,065 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-12-02 15:42:30,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:30,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585242893] [2024-12-02 15:42:30,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585242893] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996536523] [2024-12-02 15:42:30,185 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:30,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:30,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:30,187 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:30,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 15:42:30,259 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-12-02 15:42:30,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:30,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 15:42:30,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:30,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:30,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996536523] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:30,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:30,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-12-02 15:42:30,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659151829] [2024-12-02 15:42:30,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:30,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:42:30,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:30,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:42:30,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:42:30,615 INFO L87 Difference]: Start difference. First operand 183 states and 208 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:30,913 INFO L93 Difference]: Finished difference Result 254 states and 287 transitions. [2024-12-02 15:42:30,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:42:30,914 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 15:42:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:30,915 INFO L225 Difference]: With dead ends: 254 [2024-12-02 15:42:30,915 INFO L226 Difference]: Without dead ends: 235 [2024-12-02 15:42:30,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:42:30,915 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:30,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 419 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:30,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-12-02 15:42:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 201. [2024-12-02 15:42:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.15) internal successors, (230), 200 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2024-12-02 15:42:30,955 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 40 [2024-12-02 15:42:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:30,955 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2024-12-02 15:42:30,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2024-12-02 15:42:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 15:42:30,955 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:30,955 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:30,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 15:42:31,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 15:42:31,156 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:31,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1019885171, now seen corresponding path program 18 times [2024-12-02 15:42:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707122179] [2024-12-02 15:42:31,156 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:31,168 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:42:31,168 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:31,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707122179] [2024-12-02 15:42:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707122179] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828862081] [2024-12-02 15:42:31,339 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:31,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:31,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:31,341 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:31,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 15:42:31,417 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:42:31,417 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:31,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 15:42:31,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:31,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:31,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828862081] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:31,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:31,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-12-02 15:42:31,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093276448] [2024-12-02 15:42:31,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:31,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 15:42:31,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:31,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 15:42:31,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:42:31,825 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:32,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:32,103 INFO L93 Difference]: Finished difference Result 267 states and 302 transitions. [2024-12-02 15:42:32,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:42:32,103 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 15:42:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:32,104 INFO L225 Difference]: With dead ends: 267 [2024-12-02 15:42:32,104 INFO L226 Difference]: Without dead ends: 226 [2024-12-02 15:42:32,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:42:32,104 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:32,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 314 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-12-02 15:42:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 207. [2024-12-02 15:42:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.145631067961165) internal successors, (236), 206 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2024-12-02 15:42:32,137 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 40 [2024-12-02 15:42:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:32,137 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2024-12-02 15:42:32,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:32,137 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2024-12-02 15:42:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 15:42:32,138 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:32,138 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:32,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 15:42:32,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 15:42:32,338 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:32,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1979042457, now seen corresponding path program 19 times [2024-12-02 15:42:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:32,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464106622] [2024-12-02 15:42:32,339 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:32,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 15:42:32,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:32,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464106622] [2024-12-02 15:42:32,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464106622] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:32,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145760921] [2024-12-02 15:42:32,497 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:32,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:32,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:32,499 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:32,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 15:42:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:32,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:42:32,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:42:32,717 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:42:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145760921] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:32,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:32,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-12-02 15:42:32,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492856876] [2024-12-02 15:42:32,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:32,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:42:32,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:32,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:42:32,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:42:32,856 INFO L87 Difference]: Start difference. First operand 207 states and 236 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:33,092 INFO L93 Difference]: Finished difference Result 269 states and 301 transitions. [2024-12-02 15:42:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:42:33,093 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-12-02 15:42:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:33,093 INFO L225 Difference]: With dead ends: 269 [2024-12-02 15:42:33,093 INFO L226 Difference]: Without dead ends: 241 [2024-12-02 15:42:33,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:42:33,094 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:33,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 386 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-12-02 15:42:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 228. [2024-12-02 15:42:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.1277533039647578) internal successors, (256), 227 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 256 transitions. [2024-12-02 15:42:33,123 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 256 transitions. Word has length 42 [2024-12-02 15:42:33,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:33,123 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 256 transitions. [2024-12-02 15:42:33,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:33,123 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 256 transitions. [2024-12-02 15:42:33,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 15:42:33,124 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:33,124 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:33,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 15:42:33,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 15:42:33,324 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:33,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1818595617, now seen corresponding path program 20 times [2024-12-02 15:42:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:33,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639401990] [2024-12-02 15:42:33,325 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:33,334 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:33,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:33,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:33,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639401990] [2024-12-02 15:42:33,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639401990] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:33,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993088623] [2024-12-02 15:42:33,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:33,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:33,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:33,636 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:33,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 15:42:33,702 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:33,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:33,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 15:42:33,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:33,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:34,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993088623] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:34,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:34,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-12-02 15:42:34,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441347730] [2024-12-02 15:42:34,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:34,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 15:42:34,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:34,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 15:42:34,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:42:34,063 INFO L87 Difference]: Start difference. First operand 228 states and 256 transitions. Second operand has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 30 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:34,378 INFO L93 Difference]: Finished difference Result 273 states and 304 transitions. [2024-12-02 15:42:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 15:42:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 30 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-12-02 15:42:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:34,379 INFO L225 Difference]: With dead ends: 273 [2024-12-02 15:42:34,379 INFO L226 Difference]: Without dead ends: 256 [2024-12-02 15:42:34,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:42:34,380 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 67 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:34,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 897 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:34,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-12-02 15:42:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 234. [2024-12-02 15:42:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.128755364806867) internal successors, (263), 233 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 263 transitions. [2024-12-02 15:42:34,407 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 263 transitions. Word has length 42 [2024-12-02 15:42:34,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:34,407 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 263 transitions. [2024-12-02 15:42:34,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 30 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 263 transitions. [2024-12-02 15:42:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 15:42:34,408 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:34,408 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:34,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 15:42:34,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:34,608 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:34,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1477379815, now seen corresponding path program 21 times [2024-12-02 15:42:34,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:34,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900600895] [2024-12-02 15:42:34,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:34,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:34,620 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 15:42:34,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:42:34,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900600895] [2024-12-02 15:42:34,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900600895] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146249172] [2024-12-02 15:42:34,721 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:34,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:34,723 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:34,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 15:42:34,799 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 15:42:34,799 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:34,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:42:34,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:42:34,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:42:35,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146249172] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:35,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:35,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-12-02 15:42:35,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846295364] [2024-12-02 15:42:35,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:35,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:42:35,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:35,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:42:35,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:42:35,080 INFO L87 Difference]: Start difference. First operand 234 states and 263 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:35,258 INFO L93 Difference]: Finished difference Result 293 states and 327 transitions. [2024-12-02 15:42:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:42:35,259 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-12-02 15:42:35,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:35,260 INFO L225 Difference]: With dead ends: 293 [2024-12-02 15:42:35,260 INFO L226 Difference]: Without dead ends: 223 [2024-12-02 15:42:35,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:42:35,261 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:35,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 267 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-12-02 15:42:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2024-12-02 15:42:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.1176470588235294) internal successors, (247), 221 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2024-12-02 15:42:35,314 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 42 [2024-12-02 15:42:35,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:35,315 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2024-12-02 15:42:35,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2024-12-02 15:42:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 15:42:35,315 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:35,315 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:35,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 15:42:35,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 15:42:35,516 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:35,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:35,516 INFO L85 PathProgramCache]: Analyzing trace with hash 806604209, now seen corresponding path program 22 times [2024-12-02 15:42:35,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:35,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782355833] [2024-12-02 15:42:35,516 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:35,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:35,526 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:35,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782355833] [2024-12-02 15:42:35,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782355833] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628806839] [2024-12-02 15:42:35,849 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:35,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:35,851 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:35,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 15:42:35,924 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:35,924 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:35,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 15:42:35,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:36,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:36,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628806839] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:36,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:36,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2024-12-02 15:42:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218243851] [2024-12-02 15:42:36,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:36,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 15:42:36,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:36,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 15:42:36,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:42:36,302 INFO L87 Difference]: Start difference. First operand 222 states and 247 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:36,686 INFO L93 Difference]: Finished difference Result 277 states and 306 transitions. [2024-12-02 15:42:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 15:42:36,687 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-12-02 15:42:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:36,687 INFO L225 Difference]: With dead ends: 277 [2024-12-02 15:42:36,687 INFO L226 Difference]: Without dead ends: 267 [2024-12-02 15:42:36,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 15:42:36,688 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 83 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:36,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1216 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-12-02 15:42:36,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 235. [2024-12-02 15:42:36,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1153846153846154) internal successors, (261), 234 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:36,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 261 transitions. [2024-12-02 15:42:36,740 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 261 transitions. Word has length 42 [2024-12-02 15:42:36,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:36,740 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 261 transitions. [2024-12-02 15:42:36,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:36,741 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 261 transitions. [2024-12-02 15:42:36,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 15:42:36,741 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:36,741 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:36,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 15:42:36,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 15:42:36,942 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:36,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:36,942 INFO L85 PathProgramCache]: Analyzing trace with hash -614017419, now seen corresponding path program 23 times [2024-12-02 15:42:36,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:36,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798295132] [2024-12-02 15:42:36,942 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:36,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:36,948 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-12-02 15:42:36,948 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:36,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798295132] [2024-12-02 15:42:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798295132] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873430803] [2024-12-02 15:42:36,993 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:36,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:36,995 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:36,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 15:42:37,060 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-12-02 15:42:37,060 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:37,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:42:37,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:37,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873430803] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:37,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:37,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-12-02 15:42:37,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342948366] [2024-12-02 15:42:37,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:37,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:42:37,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:37,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:42:37,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:42:37,136 INFO L87 Difference]: Start difference. First operand 235 states and 261 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:37,218 INFO L93 Difference]: Finished difference Result 256 states and 282 transitions. [2024-12-02 15:42:37,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:42:37,219 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-12-02 15:42:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:37,219 INFO L225 Difference]: With dead ends: 256 [2024-12-02 15:42:37,219 INFO L226 Difference]: Without dead ends: 250 [2024-12-02 15:42:37,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:42:37,220 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 35 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:37,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 169 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-12-02 15:42:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 207. [2024-12-02 15:42:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.1116504854368932) internal successors, (229), 206 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 229 transitions. [2024-12-02 15:42:37,245 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 229 transitions. Word has length 44 [2024-12-02 15:42:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:37,245 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 229 transitions. [2024-12-02 15:42:37,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:37,245 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 229 transitions. [2024-12-02 15:42:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 15:42:37,245 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:37,245 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:37,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 15:42:37,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 15:42:37,446 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:37,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:37,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1516625995, now seen corresponding path program 24 times [2024-12-02 15:42:37,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:37,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078878383] [2024-12-02 15:42:37,446 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:37,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:37,456 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-12-02 15:42:37,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:37,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:37,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078878383] [2024-12-02 15:42:37,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078878383] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:37,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497087841] [2024-12-02 15:42:37,517 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:37,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:37,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:37,519 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:37,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 15:42:37,588 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-12-02 15:42:37,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:37,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:42:37,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:37,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:37,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497087841] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:37,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:37,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-12-02 15:42:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481002530] [2024-12-02 15:42:37,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:37,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:42:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:37,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:42:37,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:42:37,686 INFO L87 Difference]: Start difference. First operand 207 states and 229 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:37,797 INFO L93 Difference]: Finished difference Result 286 states and 317 transitions. [2024-12-02 15:42:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:42:37,797 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-12-02 15:42:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:37,798 INFO L225 Difference]: With dead ends: 286 [2024-12-02 15:42:37,799 INFO L226 Difference]: Without dead ends: 220 [2024-12-02 15:42:37,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2024-12-02 15:42:37,799 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 31 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:37,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 149 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:37,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-12-02 15:42:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 215. [2024-12-02 15:42:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.1074766355140186) internal successors, (237), 214 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 237 transitions. [2024-12-02 15:42:37,832 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 237 transitions. Word has length 44 [2024-12-02 15:42:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:37,832 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 237 transitions. [2024-12-02 15:42:37,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:37,832 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 237 transitions. [2024-12-02 15:42:37,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 15:42:37,833 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:37,833 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:37,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 15:42:38,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 15:42:38,033 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:38,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:38,034 INFO L85 PathProgramCache]: Analyzing trace with hash -578725675, now seen corresponding path program 25 times [2024-12-02 15:42:38,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:38,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329311954] [2024-12-02 15:42:38,034 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:38,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329311954] [2024-12-02 15:42:38,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329311954] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:38,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4538370] [2024-12-02 15:42:38,220 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:38,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:38,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:38,222 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:38,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 15:42:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:38,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 15:42:38,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:38,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4538370] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:38,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:38,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-12-02 15:42:38,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113097834] [2024-12-02 15:42:38,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:38,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 15:42:38,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:38,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 15:42:38,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:42:38,810 INFO L87 Difference]: Start difference. First operand 215 states and 237 transitions. Second operand has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 30 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:39,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:39,505 INFO L93 Difference]: Finished difference Result 303 states and 332 transitions. [2024-12-02 15:42:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 15:42:39,506 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 30 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-12-02 15:42:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:39,508 INFO L225 Difference]: With dead ends: 303 [2024-12-02 15:42:39,508 INFO L226 Difference]: Without dead ends: 282 [2024-12-02 15:42:39,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 15:42:39,509 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:39,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 606 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:42:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-12-02 15:42:39,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 242. [2024-12-02 15:42:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.107883817427386) internal successors, (267), 241 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 267 transitions. [2024-12-02 15:42:39,542 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 267 transitions. Word has length 44 [2024-12-02 15:42:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:39,542 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 267 transitions. [2024-12-02 15:42:39,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 30 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 267 transitions. [2024-12-02 15:42:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 15:42:39,543 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:39,543 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:39,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 15:42:39,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 15:42:39,743 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:39,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash 669621781, now seen corresponding path program 26 times [2024-12-02 15:42:39,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:39,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180453008] [2024-12-02 15:42:39,744 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:39,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:39,753 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:39,753 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:39,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:39,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180453008] [2024-12-02 15:42:39,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180453008] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:39,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993421691] [2024-12-02 15:42:39,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:39,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:39,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:39,905 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:39,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 15:42:39,989 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:39,989 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:39,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 15:42:39,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:40,260 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:40,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:40,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993421691] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:40,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:40,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-12-02 15:42:40,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51017670] [2024-12-02 15:42:40,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:40,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 15:42:40,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:40,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 15:42:40,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:42:40,491 INFO L87 Difference]: Start difference. First operand 242 states and 267 transitions. Second operand has 29 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:40,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:40,892 INFO L93 Difference]: Finished difference Result 318 states and 349 transitions. [2024-12-02 15:42:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:42:40,892 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-12-02 15:42:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:40,894 INFO L225 Difference]: With dead ends: 318 [2024-12-02 15:42:40,894 INFO L226 Difference]: Without dead ends: 273 [2024-12-02 15:42:40,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=1290, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:42:40,895 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:40,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 334 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:40,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-12-02 15:42:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 248. [2024-12-02 15:42:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.105263157894737) internal successors, (273), 247 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 273 transitions. [2024-12-02 15:42:40,931 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 273 transitions. Word has length 44 [2024-12-02 15:42:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:40,931 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 273 transitions. [2024-12-02 15:42:40,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 273 transitions. [2024-12-02 15:42:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 15:42:40,932 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:40,932 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:40,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 15:42:41,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 15:42:41,132 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:41,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash -340705511, now seen corresponding path program 27 times [2024-12-02 15:42:41,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:41,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681581292] [2024-12-02 15:42:41,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:41,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:41,145 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 15:42:41,145 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:42:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681581292] [2024-12-02 15:42:41,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681581292] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411456012] [2024-12-02 15:42:41,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:41,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:41,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:41,377 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:41,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 15:42:41,446 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 15:42:41,446 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:41,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 15:42:41,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:42:41,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:42:41,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411456012] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:41,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:41,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 32 [2024-12-02 15:42:41,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667952340] [2024-12-02 15:42:41,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:41,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 15:42:41,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:41,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 15:42:41,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:42:41,824 INFO L87 Difference]: Start difference. First operand 248 states and 273 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:42,119 INFO L93 Difference]: Finished difference Result 282 states and 310 transitions. [2024-12-02 15:42:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 15:42:42,120 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-12-02 15:42:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:42,121 INFO L225 Difference]: With dead ends: 282 [2024-12-02 15:42:42,121 INFO L226 Difference]: Without dead ends: 276 [2024-12-02 15:42:42,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=1501, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 15:42:42,122 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 53 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:42,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 545 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-12-02 15:42:42,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 265. [2024-12-02 15:42:42,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.106060606060606) internal successors, (292), 264 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:42,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 292 transitions. [2024-12-02 15:42:42,158 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 292 transitions. Word has length 46 [2024-12-02 15:42:42,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:42,158 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 292 transitions. [2024-12-02 15:42:42,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:42,158 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 292 transitions. [2024-12-02 15:42:42,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 15:42:42,159 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:42,159 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:42,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 15:42:42,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 15:42:42,360 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:42,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1956637097, now seen corresponding path program 28 times [2024-12-02 15:42:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:42,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101753497] [2024-12-02 15:42:42,360 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:42,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:42,369 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:42,369 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:42,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101753497] [2024-12-02 15:42:42,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101753497] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257608826] [2024-12-02 15:42:42,613 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:42,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:42,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:42,615 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:42,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 15:42:42,683 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:42,683 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:42,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 15:42:42,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:43,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:43,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257608826] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:43,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:43,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 32 [2024-12-02 15:42:43,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464516940] [2024-12-02 15:42:43,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:43,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 15:42:43,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:43,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 15:42:43,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:42:43,091 INFO L87 Difference]: Start difference. First operand 265 states and 292 transitions. Second operand has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:43,462 INFO L93 Difference]: Finished difference Result 285 states and 311 transitions. [2024-12-02 15:42:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 15:42:43,462 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-12-02 15:42:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:43,463 INFO L225 Difference]: With dead ends: 285 [2024-12-02 15:42:43,463 INFO L226 Difference]: Without dead ends: 253 [2024-12-02 15:42:43,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=1589, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 15:42:43,464 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 65 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:43,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1133 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:43,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-12-02 15:42:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2024-12-02 15:42:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.1075697211155378) internal successors, (278), 251 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 278 transitions. [2024-12-02 15:42:43,506 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 278 transitions. Word has length 46 [2024-12-02 15:42:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:43,507 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 278 transitions. [2024-12-02 15:42:43,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.15625) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 278 transitions. [2024-12-02 15:42:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 15:42:43,507 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:43,507 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:43,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 15:42:43,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 15:42:43,708 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:43,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 807465017, now seen corresponding path program 29 times [2024-12-02 15:42:43,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:43,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769335907] [2024-12-02 15:42:43,708 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:43,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:43,718 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:42:43,719 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:44,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769335907] [2024-12-02 15:42:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769335907] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118239525] [2024-12-02 15:42:44,007 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:44,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:44,008 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:44,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 15:42:44,074 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:42:44,074 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:44,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 15:42:44,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:44,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:44,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118239525] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:44,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:44,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2024-12-02 15:42:44,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939841526] [2024-12-02 15:42:44,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:44,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 15:42:44,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:44,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 15:42:44,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:42:44,454 INFO L87 Difference]: Start difference. First operand 252 states and 278 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:44,998 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2024-12-02 15:42:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:42:44,998 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-12-02 15:42:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:44,999 INFO L225 Difference]: With dead ends: 310 [2024-12-02 15:42:44,999 INFO L226 Difference]: Without dead ends: 300 [2024-12-02 15:42:45,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=1845, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 15:42:45,000 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 91 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:45,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1554 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:42:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-12-02 15:42:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 265. [2024-12-02 15:42:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.106060606060606) internal successors, (292), 264 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 292 transitions. [2024-12-02 15:42:45,038 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 292 transitions. Word has length 46 [2024-12-02 15:42:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:45,038 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 292 transitions. [2024-12-02 15:42:45,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 292 transitions. [2024-12-02 15:42:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 15:42:45,039 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:45,039 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:45,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 15:42:45,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 15:42:45,239 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:45,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash 142480765, now seen corresponding path program 30 times [2024-12-02 15:42:45,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:45,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126848571] [2024-12-02 15:42:45,240 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:45,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:45,250 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:42:45,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:45,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:45,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126848571] [2024-12-02 15:42:45,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126848571] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:45,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199534833] [2024-12-02 15:42:45,320 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:45,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:45,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:45,321 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:45,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 15:42:45,395 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:42:45,395 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:45,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 15:42:45,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:45,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:45,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199534833] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:45,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:45,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-12-02 15:42:45,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5411605] [2024-12-02 15:42:45,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:45,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:42:45,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:45,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:42:45,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:42:45,516 INFO L87 Difference]: Start difference. First operand 265 states and 292 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:45,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:45,662 INFO L93 Difference]: Finished difference Result 408 states and 457 transitions. [2024-12-02 15:42:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:42:45,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 15:42:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:45,663 INFO L225 Difference]: With dead ends: 408 [2024-12-02 15:42:45,663 INFO L226 Difference]: Without dead ends: 319 [2024-12-02 15:42:45,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:42:45,664 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:45,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 143 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-12-02 15:42:45,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2024-12-02 15:42:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.1072555205047319) internal successors, (351), 317 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 351 transitions. [2024-12-02 15:42:45,714 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 351 transitions. Word has length 48 [2024-12-02 15:42:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:45,714 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 351 transitions. [2024-12-02 15:42:45,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 351 transitions. [2024-12-02 15:42:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 15:42:45,714 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:45,715 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:45,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 15:42:45,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 15:42:45,915 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:45,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:45,915 INFO L85 PathProgramCache]: Analyzing trace with hash 319033021, now seen corresponding path program 31 times [2024-12-02 15:42:45,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:45,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071858153] [2024-12-02 15:42:45,916 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:45,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:45,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071858153] [2024-12-02 15:42:45,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071858153] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132149685] [2024-12-02 15:42:45,995 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:45,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:45,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:45,997 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:45,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 15:42:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:46,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 15:42:46,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:46,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:42:46,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132149685] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:46,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:46,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-12-02 15:42:46,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449193285] [2024-12-02 15:42:46,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:46,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:42:46,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:46,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:42:46,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:42:46,175 INFO L87 Difference]: Start difference. First operand 318 states and 351 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:46,331 INFO L93 Difference]: Finished difference Result 386 states and 427 transitions. [2024-12-02 15:42:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:42:46,332 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 15:42:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:46,332 INFO L225 Difference]: With dead ends: 386 [2024-12-02 15:42:46,332 INFO L226 Difference]: Without dead ends: 367 [2024-12-02 15:42:46,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:42:46,333 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:46,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 102 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-12-02 15:42:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 353. [2024-12-02 15:42:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.1136363636363635) internal successors, (392), 352 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 392 transitions. [2024-12-02 15:42:46,389 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 392 transitions. Word has length 48 [2024-12-02 15:42:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:46,389 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 392 transitions. [2024-12-02 15:42:46,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 392 transitions. [2024-12-02 15:42:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 15:42:46,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:46,390 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:46,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 15:42:46,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-12-02 15:42:46,590 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:46,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:46,591 INFO L85 PathProgramCache]: Analyzing trace with hash 130828637, now seen corresponding path program 32 times [2024-12-02 15:42:46,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:46,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712724724] [2024-12-02 15:42:46,591 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:46,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:46,601 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:46,602 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:46,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712724724] [2024-12-02 15:42:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712724724] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253344897] [2024-12-02 15:42:46,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:46,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:46,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:46,797 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:46,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 15:42:46,872 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:46,872 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:46,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:42:46,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:47,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:47,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253344897] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:47,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:47,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-12-02 15:42:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999001129] [2024-12-02 15:42:47,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:47,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 15:42:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:47,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 15:42:47,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:42:47,537 INFO L87 Difference]: Start difference. First operand 353 states and 392 transitions. Second operand has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:48,339 INFO L93 Difference]: Finished difference Result 475 states and 524 transitions. [2024-12-02 15:42:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 15:42:48,340 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 15:42:48,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:48,341 INFO L225 Difference]: With dead ends: 475 [2024-12-02 15:42:48,341 INFO L226 Difference]: Without dead ends: 451 [2024-12-02 15:42:48,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 71 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=2135, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:42:48,342 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:48,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 712 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:42:48,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-12-02 15:42:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 394. [2024-12-02 15:42:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.1145038167938932) internal successors, (438), 393 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 438 transitions. [2024-12-02 15:42:48,415 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 438 transitions. Word has length 48 [2024-12-02 15:42:48,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:48,415 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 438 transitions. [2024-12-02 15:42:48,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:48,415 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 438 transitions. [2024-12-02 15:42:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 15:42:48,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:48,415 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:48,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 15:42:48,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:48,616 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:48,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1496858269, now seen corresponding path program 33 times [2024-12-02 15:42:48,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:48,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911957334] [2024-12-02 15:42:48,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:48,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:48,634 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-12-02 15:42:48,634 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911957334] [2024-12-02 15:42:48,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911957334] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316172039] [2024-12-02 15:42:48,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:48,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:48,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:48,852 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:48,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 15:42:48,938 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-12-02 15:42:48,938 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:48,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:42:48,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:49,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:49,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316172039] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:49,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:49,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-12-02 15:42:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677599528] [2024-12-02 15:42:49,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:49,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 15:42:49,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:49,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 15:42:49,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:42:49,574 INFO L87 Difference]: Start difference. First operand 394 states and 438 transitions. Second operand has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:50,121 INFO L93 Difference]: Finished difference Result 515 states and 567 transitions. [2024-12-02 15:42:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 15:42:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 15:42:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:50,123 INFO L225 Difference]: With dead ends: 515 [2024-12-02 15:42:50,123 INFO L226 Difference]: Without dead ends: 463 [2024-12-02 15:42:50,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=267, Invalid=1895, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 15:42:50,125 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 48 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:50,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 417 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-12-02 15:42:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 402. [2024-12-02 15:42:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.112219451371571) internal successors, (446), 401 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 446 transitions. [2024-12-02 15:42:50,204 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 446 transitions. Word has length 48 [2024-12-02 15:42:50,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:50,205 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 446 transitions. [2024-12-02 15:42:50,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.911764705882353) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 446 transitions. [2024-12-02 15:42:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 15:42:50,205 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:50,205 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:50,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-02 15:42:50,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:50,406 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:50,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash -864102631, now seen corresponding path program 34 times [2024-12-02 15:42:50,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:50,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471724488] [2024-12-02 15:42:50,407 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:50,415 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:50,415 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 15:42:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:50,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471724488] [2024-12-02 15:42:50,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471724488] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:50,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412126654] [2024-12-02 15:42:50,518 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:50,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:50,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:50,520 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:50,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-02 15:42:50,594 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:50,594 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:50,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 15:42:50,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 15:42:50,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 15:42:50,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412126654] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:50,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:50,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-12-02 15:42:50,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032043898] [2024-12-02 15:42:50,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:50,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:42:50,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:50,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:42:50,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:42:50,931 INFO L87 Difference]: Start difference. First operand 402 states and 446 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:51,307 INFO L93 Difference]: Finished difference Result 502 states and 551 transitions. [2024-12-02 15:42:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:42:51,307 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-12-02 15:42:51,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:51,308 INFO L225 Difference]: With dead ends: 502 [2024-12-02 15:42:51,308 INFO L226 Difference]: Without dead ends: 464 [2024-12-02 15:42:51,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 83 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:42:51,309 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:51,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 421 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-12-02 15:42:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 447. [2024-12-02 15:42:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.0986547085201794) internal successors, (490), 446 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 490 transitions. [2024-12-02 15:42:51,389 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 490 transitions. Word has length 50 [2024-12-02 15:42:51,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:51,389 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 490 transitions. [2024-12-02 15:42:51,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 490 transitions. [2024-12-02 15:42:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 15:42:51,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:51,390 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:51,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-12-02 15:42:51,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:51,591 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:51,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1792206431, now seen corresponding path program 35 times [2024-12-02 15:42:51,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:51,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986583541] [2024-12-02 15:42:51,591 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:51,599 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-12-02 15:42:51,599 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:42:51,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:51,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986583541] [2024-12-02 15:42:51,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986583541] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:51,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884961802] [2024-12-02 15:42:51,831 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:51,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:51,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:51,833 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:51,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-02 15:42:51,908 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-12-02 15:42:51,908 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:51,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 15:42:51,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:42:52,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:42:52,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884961802] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:52,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:52,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2024-12-02 15:42:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566940499] [2024-12-02 15:42:52,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:52,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 15:42:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:52,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 15:42:52,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=971, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:42:52,307 INFO L87 Difference]: Start difference. First operand 447 states and 490 transitions. Second operand has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:52,688 INFO L93 Difference]: Finished difference Result 498 states and 544 transitions. [2024-12-02 15:42:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 15:42:52,689 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-12-02 15:42:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:52,690 INFO L225 Difference]: With dead ends: 498 [2024-12-02 15:42:52,690 INFO L226 Difference]: Without dead ends: 479 [2024-12-02 15:42:52,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=1664, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:42:52,690 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 58 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:52,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 893 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-12-02 15:42:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 453. [2024-12-02 15:42:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.0995575221238938) internal successors, (497), 452 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 497 transitions. [2024-12-02 15:42:52,782 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 497 transitions. Word has length 50 [2024-12-02 15:42:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:52,782 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 497 transitions. [2024-12-02 15:42:52,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 33 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 497 transitions. [2024-12-02 15:42:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 15:42:52,783 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:52,783 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:52,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-02 15:42:52,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:52,984 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:52,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash 974898585, now seen corresponding path program 36 times [2024-12-02 15:42:52,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:52,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233621027] [2024-12-02 15:42:52,984 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:52,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:52,995 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:42:52,995 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 15:42:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233621027] [2024-12-02 15:42:53,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233621027] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559606211] [2024-12-02 15:42:53,141 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:42:53,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:53,143 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:53,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-12-02 15:42:53,206 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:42:53,206 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:53,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 15:42:53,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 15:42:53,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 15:42:53,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559606211] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:53,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:53,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-12-02 15:42:53,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624805504] [2024-12-02 15:42:53,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:53,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 15:42:53,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:53,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 15:42:53,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:42:53,559 INFO L87 Difference]: Start difference. First operand 453 states and 497 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:53,836 INFO L93 Difference]: Finished difference Result 530 states and 581 transitions. [2024-12-02 15:42:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:42:53,836 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-12-02 15:42:53,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:53,837 INFO L225 Difference]: With dead ends: 530 [2024-12-02 15:42:53,837 INFO L226 Difference]: Without dead ends: 438 [2024-12-02 15:42:53,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:42:53,838 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:53,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 318 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:42:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-12-02 15:42:53,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 437. [2024-12-02 15:42:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.0894495412844036) internal successors, (475), 436 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 475 transitions. [2024-12-02 15:42:53,912 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 475 transitions. Word has length 50 [2024-12-02 15:42:53,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:53,912 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 475 transitions. [2024-12-02 15:42:53,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 475 transitions. [2024-12-02 15:42:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 15:42:53,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:53,915 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:53,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-12-02 15:42:54,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:54,116 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:54,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:54,116 INFO L85 PathProgramCache]: Analyzing trace with hash -363360719, now seen corresponding path program 37 times [2024-12-02 15:42:54,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:54,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608176970] [2024-12-02 15:42:54,116 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:54,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608176970] [2024-12-02 15:42:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608176970] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598334856] [2024-12-02 15:42:54,396 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:42:54,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:54,398 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:54,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-12-02 15:42:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:54,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 15:42:54,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:54,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:42:54,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598334856] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:54,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:54,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 36 [2024-12-02 15:42:54,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200752945] [2024-12-02 15:42:54,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:54,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 15:42:54,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:54,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 15:42:54,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 15:42:54,939 INFO L87 Difference]: Start difference. First operand 437 states and 475 transitions. Second operand has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:55,424 INFO L93 Difference]: Finished difference Result 459 states and 496 transitions. [2024-12-02 15:42:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:42:55,425 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-12-02 15:42:55,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:55,425 INFO L225 Difference]: With dead ends: 459 [2024-12-02 15:42:55,426 INFO L226 Difference]: Without dead ends: 425 [2024-12-02 15:42:55,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=2013, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 15:42:55,426 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 77 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:55,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1170 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:42:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-12-02 15:42:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 424. [2024-12-02 15:42:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 1.0898345153664302) internal successors, (461), 423 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 461 transitions. [2024-12-02 15:42:55,500 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 461 transitions. Word has length 50 [2024-12-02 15:42:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:55,500 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 461 transitions. [2024-12-02 15:42:55,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 461 transitions. [2024-12-02 15:42:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 15:42:55,501 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:55,501 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:55,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-12-02 15:42:55,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-02 15:42:55,701 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:55,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash -210641215, now seen corresponding path program 38 times [2024-12-02 15:42:55,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:55,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057056843] [2024-12-02 15:42:55,702 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:55,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:55,711 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:55,711 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:56,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057056843] [2024-12-02 15:42:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057056843] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57780771] [2024-12-02 15:42:56,036 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:42:56,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:56,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:56,038 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:56,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-12-02 15:42:56,126 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:42:56,126 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:56,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 15:42:56,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:56,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:42:56,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57780771] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:56,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:56,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 38 [2024-12-02 15:42:56,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703316166] [2024-12-02 15:42:56,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:56,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 15:42:56,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:56,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 15:42:56,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1314, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 15:42:56,598 INFO L87 Difference]: Start difference. First operand 424 states and 461 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:57,219 INFO L93 Difference]: Finished difference Result 497 states and 539 transitions. [2024-12-02 15:42:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:42:57,219 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-12-02 15:42:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:57,220 INFO L225 Difference]: With dead ends: 497 [2024-12-02 15:42:57,220 INFO L226 Difference]: Without dead ends: 487 [2024-12-02 15:42:57,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=2299, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 15:42:57,221 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 109 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:57,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1841 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:42:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-12-02 15:42:57,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 437. [2024-12-02 15:42:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.0894495412844036) internal successors, (475), 436 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 475 transitions. [2024-12-02 15:42:57,301 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 475 transitions. Word has length 50 [2024-12-02 15:42:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:57,302 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 475 transitions. [2024-12-02 15:42:57,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 475 transitions. [2024-12-02 15:42:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 15:42:57,302 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:57,302 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:57,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-12-02 15:42:57,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 15:42:57,503 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:57,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1148676875, now seen corresponding path program 39 times [2024-12-02 15:42:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:57,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143865123] [2024-12-02 15:42:57,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:57,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:57,515 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-12-02 15:42:57,515 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:42:57,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:57,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143865123] [2024-12-02 15:42:57,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143865123] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:57,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268651744] [2024-12-02 15:42:57,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:42:57,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:57,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:57,589 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:57,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-12-02 15:42:57,666 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-12-02 15:42:57,666 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:57,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 15:42:57,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:42:57,746 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:42:57,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268651744] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:57,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:57,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-12-02 15:42:57,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4790643] [2024-12-02 15:42:57,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:57,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 15:42:57,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:57,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 15:42:57,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:42:57,821 INFO L87 Difference]: Start difference. First operand 437 states and 475 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:58,021 INFO L93 Difference]: Finished difference Result 467 states and 505 transitions. [2024-12-02 15:42:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 15:42:58,021 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-12-02 15:42:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:58,022 INFO L225 Difference]: With dead ends: 467 [2024-12-02 15:42:58,023 INFO L226 Difference]: Without dead ends: 461 [2024-12-02 15:42:58,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=357, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:42:58,023 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 51 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:58,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 161 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:58,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-12-02 15:42:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 405. [2024-12-02 15:42:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.0866336633663367) internal successors, (439), 404 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:58,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 439 transitions. [2024-12-02 15:42:58,098 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 439 transitions. Word has length 52 [2024-12-02 15:42:58,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:58,098 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 439 transitions. [2024-12-02 15:42:58,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:58,098 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 439 transitions. [2024-12-02 15:42:58,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 15:42:58,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:58,099 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:58,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-12-02 15:42:58,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 15:42:58,299 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:58,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash 15896629, now seen corresponding path program 40 times [2024-12-02 15:42:58,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:58,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596449284] [2024-12-02 15:42:58,300 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:58,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:58,308 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:58,308 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:42:58,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:58,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596449284] [2024-12-02 15:42:58,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596449284] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:58,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643430040] [2024-12-02 15:42:58,383 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:42:58,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:58,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:58,385 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:58,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-12-02 15:42:58,458 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:42:58,458 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:58,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 15:42:58,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:42:58,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:42:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643430040] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:58,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-12-02 15:42:58,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400866831] [2024-12-02 15:42:58,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:58,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:42:58,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:58,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:42:58,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:42:58,588 INFO L87 Difference]: Start difference. First operand 405 states and 439 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:58,787 INFO L93 Difference]: Finished difference Result 530 states and 577 transitions. [2024-12-02 15:42:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 15:42:58,788 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-12-02 15:42:58,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:58,789 INFO L225 Difference]: With dead ends: 530 [2024-12-02 15:42:58,789 INFO L226 Difference]: Without dead ends: 424 [2024-12-02 15:42:58,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 91 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=292, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:42:58,789 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 56 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:58,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 187 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:42:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-12-02 15:42:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 417. [2024-12-02 15:42:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.0841346153846154) internal successors, (451), 416 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 451 transitions. [2024-12-02 15:42:58,877 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 451 transitions. Word has length 52 [2024-12-02 15:42:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:58,877 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 451 transitions. [2024-12-02 15:42:58,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:42:58,877 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 451 transitions. [2024-12-02 15:42:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 15:42:58,877 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:58,877 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:58,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-12-02 15:42:59,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 15:42:59,078 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:59,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash -440138267, now seen corresponding path program 41 times [2024-12-02 15:42:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:59,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232543838] [2024-12-02 15:42:59,078 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:59,087 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-12-02 15:42:59,088 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:59,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:59,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232543838] [2024-12-02 15:42:59,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232543838] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:42:59,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317871304] [2024-12-02 15:42:59,308 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:42:59,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:42:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:42:59,310 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:42:59,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-12-02 15:42:59,386 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-12-02 15:42:59,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:42:59,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 15:42:59,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:42:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:42:59,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:00,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317871304] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:00,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:00,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2024-12-02 15:43:00,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387282821] [2024-12-02 15:43:00,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:00,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 15:43:00,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:00,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 15:43:00,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 15:43:00,206 INFO L87 Difference]: Start difference. First operand 417 states and 451 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:01,108 INFO L93 Difference]: Finished difference Result 560 states and 603 transitions. [2024-12-02 15:43:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:43:01,108 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-12-02 15:43:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:01,109 INFO L225 Difference]: With dead ends: 560 [2024-12-02 15:43:01,109 INFO L226 Difference]: Without dead ends: 534 [2024-12-02 15:43:01,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:43:01,110 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:01,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 740 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:43:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-12-02 15:43:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 469. [2024-12-02 15:43:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.0833333333333333) internal successors, (507), 468 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 507 transitions. [2024-12-02 15:43:01,202 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 507 transitions. Word has length 52 [2024-12-02 15:43:01,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:01,202 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 507 transitions. [2024-12-02 15:43:01,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 507 transitions. [2024-12-02 15:43:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 15:43:01,203 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:01,203 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:01,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-12-02 15:43:01,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:01,403 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:01,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1945654491, now seen corresponding path program 42 times [2024-12-02 15:43:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102278846] [2024-12-02 15:43:01,404 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:01,414 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-12-02 15:43:01,414 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102278846] [2024-12-02 15:43:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102278846] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112247657] [2024-12-02 15:43:01,602 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:01,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:01,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:01,603 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:01,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-12-02 15:43:01,670 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-12-02 15:43:01,670 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:01,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 15:43:01,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:02,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:02,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112247657] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:02,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:02,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-12-02 15:43:02,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064697547] [2024-12-02 15:43:02,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:02,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 15:43:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:02,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 15:43:02,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:43:02,401 INFO L87 Difference]: Start difference. First operand 469 states and 507 transitions. Second operand has 39 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 39 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:03,081 INFO L93 Difference]: Finished difference Result 610 states and 656 transitions. [2024-12-02 15:43:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:43:03,081 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 39 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-12-02 15:43:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:03,082 INFO L225 Difference]: With dead ends: 610 [2024-12-02 15:43:03,082 INFO L226 Difference]: Without dead ends: 554 [2024-12-02 15:43:03,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=349, Invalid=2621, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:43:03,083 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:03,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 477 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:43:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-12-02 15:43:03,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 477. [2024-12-02 15:43:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.0819327731092436) internal successors, (515), 476 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 515 transitions. [2024-12-02 15:43:03,187 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 515 transitions. Word has length 52 [2024-12-02 15:43:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:03,187 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 515 transitions. [2024-12-02 15:43:03,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 39 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 515 transitions. [2024-12-02 15:43:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 15:43:03,188 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:03,188 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:03,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-12-02 15:43:03,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:03,388 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:03,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:03,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1247632793, now seen corresponding path program 43 times [2024-12-02 15:43:03,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:03,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391975617] [2024-12-02 15:43:03,389 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:03,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:43:03,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:03,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391975617] [2024-12-02 15:43:03,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391975617] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:03,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388900484] [2024-12-02 15:43:03,650 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:03,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:03,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:03,652 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:03,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-12-02 15:43:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:03,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 15:43:03,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:43:04,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:43:04,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388900484] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:04,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:04,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 35 [2024-12-02 15:43:04,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277531249] [2024-12-02 15:43:04,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:04,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 15:43:04,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:04,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 15:43:04,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 15:43:04,182 INFO L87 Difference]: Start difference. First operand 477 states and 515 transitions. Second operand has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:04,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:04,608 INFO L93 Difference]: Finished difference Result 515 states and 556 transitions. [2024-12-02 15:43:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 15:43:04,608 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-12-02 15:43:04,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:04,609 INFO L225 Difference]: With dead ends: 515 [2024-12-02 15:43:04,609 INFO L226 Difference]: Without dead ends: 509 [2024-12-02 15:43:04,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=1824, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 15:43:04,610 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 52 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:04,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 780 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:43:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-12-02 15:43:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 496. [2024-12-02 15:43:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.082828282828283) internal successors, (536), 495 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 536 transitions. [2024-12-02 15:43:04,708 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 536 transitions. Word has length 54 [2024-12-02 15:43:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:04,708 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 536 transitions. [2024-12-02 15:43:04,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 536 transitions. [2024-12-02 15:43:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 15:43:04,708 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:04,709 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:04,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-12-02 15:43:04,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:04,909 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:04,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:04,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2103820329, now seen corresponding path program 44 times [2024-12-02 15:43:04,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:04,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474105647] [2024-12-02 15:43:04,909 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:04,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:04,920 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:04,920 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:43:05,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:05,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474105647] [2024-12-02 15:43:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474105647] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:05,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020140634] [2024-12-02 15:43:05,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:05,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:05,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:05,248 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:05,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-12-02 15:43:05,336 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:05,336 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:05,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 15:43:05,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:43:05,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:43:05,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020140634] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:05,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:05,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 37 [2024-12-02 15:43:05,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130615482] [2024-12-02 15:43:05,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:05,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 15:43:05,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:05,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 15:43:05,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:43:05,784 INFO L87 Difference]: Start difference. First operand 496 states and 536 transitions. Second operand has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:06,242 INFO L93 Difference]: Finished difference Result 518 states and 557 transitions. [2024-12-02 15:43:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:43:06,243 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-12-02 15:43:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:06,244 INFO L225 Difference]: With dead ends: 518 [2024-12-02 15:43:06,244 INFO L226 Difference]: Without dead ends: 480 [2024-12-02 15:43:06,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=2098, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 15:43:06,245 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 65 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:06,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1116 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:43:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-12-02 15:43:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2024-12-02 15:43:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.0836820083682008) internal successors, (518), 478 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 518 transitions. [2024-12-02 15:43:06,335 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 518 transitions. Word has length 54 [2024-12-02 15:43:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:06,335 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 518 transitions. [2024-12-02 15:43:06,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 518 transitions. [2024-12-02 15:43:06,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 15:43:06,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:06,336 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:06,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-12-02 15:43:06,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-12-02 15:43:06,537 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:06,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash -300777799, now seen corresponding path program 45 times [2024-12-02 15:43:06,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:06,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243601306] [2024-12-02 15:43:06,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:06,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:06,549 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:43:06,549 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:43:06,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243601306] [2024-12-02 15:43:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243601306] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164080325] [2024-12-02 15:43:06,884 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:06,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:06,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:06,886 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:06,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-12-02 15:43:06,984 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:43:06,985 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:06,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 15:43:06,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:43:07,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:43:07,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164080325] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:07,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:07,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2024-12-02 15:43:07,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162192444] [2024-12-02 15:43:07,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:07,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 15:43:07,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:07,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 15:43:07,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1384, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:43:07,476 INFO L87 Difference]: Start difference. First operand 479 states and 518 transitions. Second operand has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 39 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:08,059 INFO L93 Difference]: Finished difference Result 502 states and 540 transitions. [2024-12-02 15:43:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:43:08,060 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 39 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-12-02 15:43:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:08,061 INFO L225 Difference]: With dead ends: 502 [2024-12-02 15:43:08,061 INFO L226 Difference]: Without dead ends: 466 [2024-12-02 15:43:08,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=2390, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 15:43:08,062 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 89 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:08,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1603 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:43:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-12-02 15:43:08,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2024-12-02 15:43:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.0838709677419356) internal successors, (504), 465 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 504 transitions. [2024-12-02 15:43:08,156 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 504 transitions. Word has length 54 [2024-12-02 15:43:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:08,156 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 504 transitions. [2024-12-02 15:43:08,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 39 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 504 transitions. [2024-12-02 15:43:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 15:43:08,157 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:08,157 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:08,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-12-02 15:43:08,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-12-02 15:43:08,358 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:08,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:08,358 INFO L85 PathProgramCache]: Analyzing trace with hash 845977929, now seen corresponding path program 46 times [2024-12-02 15:43:08,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:08,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470213644] [2024-12-02 15:43:08,358 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:43:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:08,368 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:43:08,368 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:43:08,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:08,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470213644] [2024-12-02 15:43:08,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470213644] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:08,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616340919] [2024-12-02 15:43:08,761 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:43:08,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:08,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:08,763 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:08,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-12-02 15:43:08,841 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:43:08,841 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:08,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 15:43:08,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:43:09,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:43:09,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616340919] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:09,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:09,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 40 [2024-12-02 15:43:09,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154692886] [2024-12-02 15:43:09,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:09,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 15:43:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:09,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 15:43:09,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1466, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 15:43:09,265 INFO L87 Difference]: Start difference. First operand 466 states and 504 transitions. Second operand has 40 states, 40 states have (on average 2.125) internal successors, (85), 40 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:09,970 INFO L93 Difference]: Finished difference Result 543 states and 586 transitions. [2024-12-02 15:43:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 15:43:09,970 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 40 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-12-02 15:43:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:09,973 INFO L225 Difference]: With dead ends: 543 [2024-12-02 15:43:09,973 INFO L226 Difference]: Without dead ends: 533 [2024-12-02 15:43:09,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=2599, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:43:09,973 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 117 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:09,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1983 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:43:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-12-02 15:43:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 479. [2024-12-02 15:43:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.0836820083682008) internal successors, (518), 478 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 518 transitions. [2024-12-02 15:43:10,108 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 518 transitions. Word has length 54 [2024-12-02 15:43:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:10,108 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 518 transitions. [2024-12-02 15:43:10,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 40 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 518 transitions. [2024-12-02 15:43:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 15:43:10,109 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:10,109 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:10,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-12-02 15:43:10,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-12-02 15:43:10,310 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:10,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:10,310 INFO L85 PathProgramCache]: Analyzing trace with hash -464887299, now seen corresponding path program 47 times [2024-12-02 15:43:10,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:10,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557453836] [2024-12-02 15:43:10,310 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:43:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:10,318 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:43:10,318 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:43:10,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:10,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557453836] [2024-12-02 15:43:10,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557453836] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:10,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833376854] [2024-12-02 15:43:10,400 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:43:10,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:10,402 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:10,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-12-02 15:43:10,485 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:43:10,485 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:10,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 15:43:10,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:43:10,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:10,627 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:43:10,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833376854] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:10,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:10,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2024-12-02 15:43:10,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168172284] [2024-12-02 15:43:10,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:10,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 15:43:10,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:10,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 15:43:10,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:43:10,628 INFO L87 Difference]: Start difference. First operand 479 states and 518 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:10,904 INFO L93 Difference]: Finished difference Result 702 states and 771 transitions. [2024-12-02 15:43:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 15:43:10,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 15:43:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:10,906 INFO L225 Difference]: With dead ends: 702 [2024-12-02 15:43:10,906 INFO L226 Difference]: Without dead ends: 567 [2024-12-02 15:43:10,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:43:10,907 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:10,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 215 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:43:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-12-02 15:43:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 566. [2024-12-02 15:43:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.0849557522123894) internal successors, (613), 565 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 613 transitions. [2024-12-02 15:43:11,040 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 613 transitions. Word has length 56 [2024-12-02 15:43:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:11,040 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 613 transitions. [2024-12-02 15:43:11,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 613 transitions. [2024-12-02 15:43:11,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 15:43:11,040 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:11,040 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:11,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-12-02 15:43:11,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-12-02 15:43:11,241 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:11,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1998753085, now seen corresponding path program 48 times [2024-12-02 15:43:11,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:11,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526058205] [2024-12-02 15:43:11,241 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:11,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:11,252 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-12-02 15:43:11,252 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:43:11,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:11,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526058205] [2024-12-02 15:43:11,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526058205] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:11,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434094644] [2024-12-02 15:43:11,323 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:11,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:11,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:11,325 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:11,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-12-02 15:43:11,400 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-12-02 15:43:11,400 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:11,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 15:43:11,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:43:11,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 15:43:11,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434094644] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:11,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:11,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-12-02 15:43:11,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887563418] [2024-12-02 15:43:11,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:11,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:43:11,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:11,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:43:11,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:43:11,542 INFO L87 Difference]: Start difference. First operand 566 states and 613 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:11,851 INFO L93 Difference]: Finished difference Result 657 states and 714 transitions. [2024-12-02 15:43:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 15:43:11,852 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 15:43:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:11,853 INFO L225 Difference]: With dead ends: 657 [2024-12-02 15:43:11,853 INFO L226 Difference]: Without dead ends: 636 [2024-12-02 15:43:11,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-12-02 15:43:11,854 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:11,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 256 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:43:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2024-12-02 15:43:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 613. [2024-12-02 15:43:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.091503267973856) internal successors, (668), 612 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 668 transitions. [2024-12-02 15:43:11,975 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 668 transitions. Word has length 56 [2024-12-02 15:43:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:11,975 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 668 transitions. [2024-12-02 15:43:11,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 668 transitions. [2024-12-02 15:43:11,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 15:43:11,975 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:11,976 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:11,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-12-02 15:43:12,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:12,176 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:12,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash -749826451, now seen corresponding path program 49 times [2024-12-02 15:43:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:12,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674377052] [2024-12-02 15:43:12,177 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:12,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:12,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:12,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674377052] [2024-12-02 15:43:12,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674377052] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:12,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449840475] [2024-12-02 15:43:12,547 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:12,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:12,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:12,548 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:12,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-12-02 15:43:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:12,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 15:43:12,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:13,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:13,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449840475] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:13,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:13,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 46 [2024-12-02 15:43:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768451711] [2024-12-02 15:43:13,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:13,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 15:43:13,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:13,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 15:43:13,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1920, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 15:43:13,629 INFO L87 Difference]: Start difference. First operand 613 states and 668 transitions. Second operand has 46 states, 46 states have (on average 2.630434782608696) internal successors, (121), 46 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:15,163 INFO L93 Difference]: Finished difference Result 798 states and 865 transitions. [2024-12-02 15:43:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:43:15,164 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.630434782608696) internal successors, (121), 46 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 15:43:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:15,165 INFO L225 Difference]: With dead ends: 798 [2024-12-02 15:43:15,165 INFO L226 Difference]: Without dead ends: 769 [2024-12-02 15:43:15,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 79 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=337, Invalid=3953, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 15:43:15,166 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:15,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 782 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:43:15,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-12-02 15:43:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 681. [2024-12-02 15:43:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 1.0911764705882352) internal successors, (742), 680 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 742 transitions. [2024-12-02 15:43:15,308 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 742 transitions. Word has length 56 [2024-12-02 15:43:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:15,308 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 742 transitions. [2024-12-02 15:43:15,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.630434782608696) internal successors, (121), 46 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 742 transitions. [2024-12-02 15:43:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 15:43:15,308 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:15,308 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:15,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-12-02 15:43:15,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-12-02 15:43:15,509 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:15,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:15,509 INFO L85 PathProgramCache]: Analyzing trace with hash -146938963, now seen corresponding path program 50 times [2024-12-02 15:43:15,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:15,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376615922] [2024-12-02 15:43:15,509 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:15,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:15,518 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:15,518 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:15,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:15,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376615922] [2024-12-02 15:43:15,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376615922] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:15,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136492442] [2024-12-02 15:43:15,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:15,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:15,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:15,794 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:15,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-12-02 15:43:15,877 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:15,877 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:15,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 15:43:15,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:16,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:16,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136492442] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:16,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:16,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2024-12-02 15:43:16,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039527916] [2024-12-02 15:43:16,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:16,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 15:43:16,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:16,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 15:43:16,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1765, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:43:16,792 INFO L87 Difference]: Start difference. First operand 681 states and 742 transitions. Second operand has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:17,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:17,791 INFO L93 Difference]: Finished difference Result 901 states and 972 transitions. [2024-12-02 15:43:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 15:43:17,791 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 15:43:17,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:17,793 INFO L225 Difference]: With dead ends: 901 [2024-12-02 15:43:17,793 INFO L226 Difference]: Without dead ends: 838 [2024-12-02 15:43:17,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=444, Invalid=3462, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 15:43:17,794 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 64 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:17,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 520 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:43:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-12-02 15:43:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 691. [2024-12-02 15:43:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 1.0898550724637681) internal successors, (752), 690 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 752 transitions. [2024-12-02 15:43:17,942 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 752 transitions. Word has length 56 [2024-12-02 15:43:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:17,942 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 752 transitions. [2024-12-02 15:43:17,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 752 transitions. [2024-12-02 15:43:17,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 15:43:17,942 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:17,943 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:17,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-12-02 15:43:18,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-12-02 15:43:18,143 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:18,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:18,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1716664423, now seen corresponding path program 51 times [2024-12-02 15:43:18,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:18,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94924167] [2024-12-02 15:43:18,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:18,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:18,153 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:43:18,153 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 15:43:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94924167] [2024-12-02 15:43:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94924167] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112450090] [2024-12-02 15:43:18,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:18,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:18,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:18,353 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:18,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-12-02 15:43:18,442 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:43:18,442 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:18,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 15:43:18,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 15:43:18,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 15:43:18,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112450090] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:18,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:18,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 31 [2024-12-02 15:43:18,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067431874] [2024-12-02 15:43:18,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:18,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 15:43:18,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:18,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 15:43:18,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:43:18,983 INFO L87 Difference]: Start difference. First operand 691 states and 752 transitions. Second operand has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:19,612 INFO L93 Difference]: Finished difference Result 837 states and 905 transitions. [2024-12-02 15:43:19,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 15:43:19,613 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-02 15:43:19,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:19,614 INFO L225 Difference]: With dead ends: 837 [2024-12-02 15:43:19,614 INFO L226 Difference]: Without dead ends: 789 [2024-12-02 15:43:19,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 15:43:19,615 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:19,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 507 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:43:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2024-12-02 15:43:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 768. [2024-12-02 15:43:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.0795306388526726) internal successors, (828), 767 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 828 transitions. [2024-12-02 15:43:19,775 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 828 transitions. Word has length 58 [2024-12-02 15:43:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:19,775 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 828 transitions. [2024-12-02 15:43:19,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 828 transitions. [2024-12-02 15:43:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 15:43:19,776 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:19,776 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:19,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-12-02 15:43:19,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:19,976 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:19,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1993180705, now seen corresponding path program 52 times [2024-12-02 15:43:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:19,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150664166] [2024-12-02 15:43:19,977 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:43:19,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:19,986 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:43:19,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:43:20,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150664166] [2024-12-02 15:43:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150664166] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882887674] [2024-12-02 15:43:20,260 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:43:20,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:20,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:20,261 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:20,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-12-02 15:43:20,338 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:43:20,338 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:20,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 15:43:20,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:43:20,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:43:20,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882887674] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:20,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:20,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 37 [2024-12-02 15:43:20,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354072854] [2024-12-02 15:43:20,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:20,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 15:43:20,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:20,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 15:43:20,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1234, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:43:20,821 INFO L87 Difference]: Start difference. First operand 768 states and 828 transitions. Second operand has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 37 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:21,315 INFO L93 Difference]: Finished difference Result 825 states and 888 transitions. [2024-12-02 15:43:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:43:21,315 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 37 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-02 15:43:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:21,317 INFO L225 Difference]: With dead ends: 825 [2024-12-02 15:43:21,317 INFO L226 Difference]: Without dead ends: 804 [2024-12-02 15:43:21,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=2094, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 15:43:21,317 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 67 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:21,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1006 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:43:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-12-02 15:43:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 774. [2024-12-02 15:43:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 1.0802069857697283) internal successors, (835), 773 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 835 transitions. [2024-12-02 15:43:21,484 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 835 transitions. Word has length 58 [2024-12-02 15:43:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:21,484 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 835 transitions. [2024-12-02 15:43:21,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 37 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 835 transitions. [2024-12-02 15:43:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 15:43:21,485 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:21,485 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:21,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-12-02 15:43:21,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-12-02 15:43:21,686 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:21,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1425705447, now seen corresponding path program 53 times [2024-12-02 15:43:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927842485] [2024-12-02 15:43:21,686 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:43:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:21,696 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:43:21,696 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 15:43:21,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:21,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927842485] [2024-12-02 15:43:21,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927842485] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:21,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257672042] [2024-12-02 15:43:21,829 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:43:21,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:21,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:21,831 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:21,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-12-02 15:43:21,912 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:43:21,912 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:21,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 15:43:21,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 15:43:22,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 15:43:22,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257672042] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:22,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:22,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2024-12-02 15:43:22,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681096037] [2024-12-02 15:43:22,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:22,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 15:43:22,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:22,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 15:43:22,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-12-02 15:43:22,341 INFO L87 Difference]: Start difference. First operand 774 states and 835 transitions. Second operand has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 28 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:22,812 INFO L93 Difference]: Finished difference Result 869 states and 939 transitions. [2024-12-02 15:43:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:43:22,813 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 28 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-02 15:43:22,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:22,814 INFO L225 Difference]: With dead ends: 869 [2024-12-02 15:43:22,814 INFO L226 Difference]: Without dead ends: 755 [2024-12-02 15:43:22,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=1215, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 15:43:22,815 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:22,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 411 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:43:22,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-12-02 15:43:22,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 754. [2024-12-02 15:43:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.0717131474103585) internal successors, (807), 753 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 807 transitions. [2024-12-02 15:43:22,983 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 807 transitions. Word has length 58 [2024-12-02 15:43:22,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:22,984 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 807 transitions. [2024-12-02 15:43:22,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 28 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 807 transitions. [2024-12-02 15:43:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 15:43:22,984 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:22,984 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:22,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-12-02 15:43:23,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-12-02 15:43:23,185 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:23,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash -419351887, now seen corresponding path program 54 times [2024-12-02 15:43:23,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:23,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671479554] [2024-12-02 15:43:23,185 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:23,205 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:43:23,205 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:43:23,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:23,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671479554] [2024-12-02 15:43:23,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671479554] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:23,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32934974] [2024-12-02 15:43:23,584 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:23,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:23,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:23,586 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:23,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-12-02 15:43:23,699 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-12-02 15:43:23,699 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:23,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 15:43:23,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:43:23,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:43:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32934974] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:24,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:24,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 41 [2024-12-02 15:43:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905862161] [2024-12-02 15:43:24,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:24,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 15:43:24,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:24,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 15:43:24,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1533, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 15:43:24,290 INFO L87 Difference]: Start difference. First operand 754 states and 807 transitions. Second operand has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:24,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:24,990 INFO L93 Difference]: Finished difference Result 778 states and 830 transitions. [2024-12-02 15:43:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:43:24,991 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-02 15:43:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:24,992 INFO L225 Difference]: With dead ends: 778 [2024-12-02 15:43:24,992 INFO L226 Difference]: Without dead ends: 738 [2024-12-02 15:43:24,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=2584, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:43:24,993 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 74 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:24,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1531 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:43:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-12-02 15:43:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 737. [2024-12-02 15:43:25,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.0720108695652173) internal successors, (789), 736 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 789 transitions. [2024-12-02 15:43:25,151 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 789 transitions. Word has length 58 [2024-12-02 15:43:25,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:25,152 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 789 transitions. [2024-12-02 15:43:25,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 789 transitions. [2024-12-02 15:43:25,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 15:43:25,152 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:25,152 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:25,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-12-02 15:43:25,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-12-02 15:43:25,353 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:25,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:25,353 INFO L85 PathProgramCache]: Analyzing trace with hash 441891649, now seen corresponding path program 55 times [2024-12-02 15:43:25,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:25,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537505584] [2024-12-02 15:43:25,353 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:25,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:43:25,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:25,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537505584] [2024-12-02 15:43:25,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537505584] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:25,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284683132] [2024-12-02 15:43:25,704 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:25,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:25,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:25,706 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:25,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-12-02 15:43:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:25,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 15:43:25,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:26,125 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:43:26,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:43:26,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284683132] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:26,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:26,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 42 [2024-12-02 15:43:26,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508499294] [2024-12-02 15:43:26,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:26,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 15:43:26,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:26,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 15:43:26,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 15:43:26,265 INFO L87 Difference]: Start difference. First operand 737 states and 789 transitions. Second operand has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 42 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:27,042 INFO L93 Difference]: Finished difference Result 762 states and 813 transitions. [2024-12-02 15:43:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 15:43:27,043 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 42 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-02 15:43:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:27,044 INFO L225 Difference]: With dead ends: 762 [2024-12-02 15:43:27,044 INFO L226 Difference]: Without dead ends: 724 [2024-12-02 15:43:27,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=2799, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:43:27,045 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 98 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:27,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1942 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:43:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-12-02 15:43:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2024-12-02 15:43:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.0719225449515906) internal successors, (775), 723 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 775 transitions. [2024-12-02 15:43:27,204 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 775 transitions. Word has length 58 [2024-12-02 15:43:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:27,205 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 775 transitions. [2024-12-02 15:43:27,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 42 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 775 transitions. [2024-12-02 15:43:27,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 15:43:27,205 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:27,205 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:27,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-12-02 15:43:27,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:27,406 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:27,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash -411623471, now seen corresponding path program 56 times [2024-12-02 15:43:27,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:27,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738254675] [2024-12-02 15:43:27,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:27,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:27,416 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:27,416 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:43:27,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:27,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738254675] [2024-12-02 15:43:27,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738254675] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:27,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345861164] [2024-12-02 15:43:27,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:27,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:27,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:27,849 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:27,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-12-02 15:43:27,936 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:27,936 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:27,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 15:43:27,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:43:28,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:43:28,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345861164] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:28,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:28,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2024-12-02 15:43:28,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221247081] [2024-12-02 15:43:28,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:28,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 15:43:28,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:28,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 15:43:28,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1786, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:43:28,489 INFO L87 Difference]: Start difference. First operand 724 states and 775 transitions. Second operand has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 44 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:29,379 INFO L93 Difference]: Finished difference Result 818 states and 875 transitions. [2024-12-02 15:43:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:43:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 44 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-02 15:43:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:29,381 INFO L225 Difference]: With dead ends: 818 [2024-12-02 15:43:29,381 INFO L226 Difference]: Without dead ends: 808 [2024-12-02 15:43:29,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 15:43:29,382 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 131 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:29,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 2538 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:43:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-12-02 15:43:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 737. [2024-12-02 15:43:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.0720108695652173) internal successors, (789), 736 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 789 transitions. [2024-12-02 15:43:29,558 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 789 transitions. Word has length 58 [2024-12-02 15:43:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:29,559 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 789 transitions. [2024-12-02 15:43:29,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 44 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 789 transitions. [2024-12-02 15:43:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 15:43:29,560 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:29,560 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:29,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-12-02 15:43:29,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:29,760 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:29,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:29,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1120225419, now seen corresponding path program 57 times [2024-12-02 15:43:29,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:29,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448768905] [2024-12-02 15:43:29,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:29,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:29,773 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:43:29,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:29,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:29,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448768905] [2024-12-02 15:43:29,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448768905] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:29,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974528409] [2024-12-02 15:43:29,870 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:29,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:29,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:29,872 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:29,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-12-02 15:43:29,967 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:43:29,968 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:29,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 15:43:29,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:30,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:30,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974528409] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:30,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:30,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-12-02 15:43:30,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064036243] [2024-12-02 15:43:30,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:30,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:43:30,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:30,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:43:30,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:43:30,138 INFO L87 Difference]: Start difference. First operand 737 states and 789 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:30,486 INFO L93 Difference]: Finished difference Result 778 states and 830 transitions. [2024-12-02 15:43:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 15:43:30,487 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 15:43:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:30,488 INFO L225 Difference]: With dead ends: 778 [2024-12-02 15:43:30,488 INFO L226 Difference]: Without dead ends: 772 [2024-12-02 15:43:30,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 103 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=607, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:43:30,489 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 55 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:30,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 262 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:43:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-12-02 15:43:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 701. [2024-12-02 15:43:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.07) internal successors, (749), 700 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 749 transitions. [2024-12-02 15:43:30,649 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 749 transitions. Word has length 60 [2024-12-02 15:43:30,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:30,649 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 749 transitions. [2024-12-02 15:43:30,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 749 transitions. [2024-12-02 15:43:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 15:43:30,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:30,650 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:30,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-12-02 15:43:30,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-12-02 15:43:30,850 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:30,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:30,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1792678731, now seen corresponding path program 58 times [2024-12-02 15:43:30,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:30,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189269839] [2024-12-02 15:43:30,851 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:43:30,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:30,860 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:43:30,860 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:30,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:30,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189269839] [2024-12-02 15:43:30,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189269839] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:30,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038375285] [2024-12-02 15:43:30,944 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:43:30,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:30,945 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:30,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-12-02 15:43:31,045 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:43:31,045 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:31,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 15:43:31,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:31,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:31,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038375285] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:31,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:31,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-12-02 15:43:31,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233209010] [2024-12-02 15:43:31,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:31,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 15:43:31,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:31,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 15:43:31,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2024-12-02 15:43:31,201 INFO L87 Difference]: Start difference. First operand 701 states and 749 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:31,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:31,514 INFO L93 Difference]: Finished difference Result 880 states and 945 transitions. [2024-12-02 15:43:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 15:43:31,515 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 15:43:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:31,516 INFO L225 Difference]: With dead ends: 880 [2024-12-02 15:43:31,516 INFO L226 Difference]: Without dead ends: 726 [2024-12-02 15:43:31,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 104 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=291, Invalid=521, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:43:31,517 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 86 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:31,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 256 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:43:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-12-02 15:43:31,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 717. [2024-12-02 15:43:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 1.068435754189944) internal successors, (765), 716 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 765 transitions. [2024-12-02 15:43:31,686 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 765 transitions. Word has length 60 [2024-12-02 15:43:31,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:31,686 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 765 transitions. [2024-12-02 15:43:31,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:31,686 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 765 transitions. [2024-12-02 15:43:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 15:43:31,687 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:31,687 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:31,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-12-02 15:43:31,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:31,887 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:31,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:31,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1370365195, now seen corresponding path program 59 times [2024-12-02 15:43:31,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:31,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162882828] [2024-12-02 15:43:31,888 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:43:31,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:31,899 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:43:31,899 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:32,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:32,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162882828] [2024-12-02 15:43:32,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162882828] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:32,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995436046] [2024-12-02 15:43:32,162 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:43:32,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:32,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:32,163 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:32,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-12-02 15:43:32,247 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:43:32,247 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:32,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 15:43:32,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:32,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:33,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995436046] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:33,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:33,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 48 [2024-12-02 15:43:33,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212267352] [2024-12-02 15:43:33,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:33,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 15:43:33,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:33,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 15:43:33,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2118, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 15:43:33,380 INFO L87 Difference]: Start difference. First operand 717 states and 765 transitions. Second operand has 48 states, 48 states have (on average 2.5625) internal successors, (123), 48 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:34,922 INFO L93 Difference]: Finished difference Result 927 states and 986 transitions. [2024-12-02 15:43:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:43:34,923 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.5625) internal successors, (123), 48 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 15:43:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:34,924 INFO L225 Difference]: With dead ends: 927 [2024-12-02 15:43:34,924 INFO L226 Difference]: Without dead ends: 896 [2024-12-02 15:43:34,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 83 SyntacticMatches, 10 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=353, Invalid=4617, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:43:34,925 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:34,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 895 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:43:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-12-02 15:43:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 798. [2024-12-02 15:43:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.067754077791719) internal successors, (851), 797 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 851 transitions. [2024-12-02 15:43:35,104 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 851 transitions. Word has length 60 [2024-12-02 15:43:35,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:35,104 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 851 transitions. [2024-12-02 15:43:35,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.5625) internal successors, (123), 48 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 851 transitions. [2024-12-02 15:43:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 15:43:35,105 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:35,105 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:35,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-12-02 15:43:35,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:35,306 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:35,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1816074187, now seen corresponding path program 60 times [2024-12-02 15:43:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:35,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972518515] [2024-12-02 15:43:35,306 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:35,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:35,326 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-12-02 15:43:35,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:35,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:35,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972518515] [2024-12-02 15:43:35,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972518515] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:35,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356865980] [2024-12-02 15:43:35,652 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:35,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:35,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:35,653 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:35,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-12-02 15:43:35,747 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-12-02 15:43:35,747 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:35,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 15:43:35,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:36,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:36,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356865980] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:36,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:36,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-12-02 15:43:36,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177153076] [2024-12-02 15:43:36,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:36,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 15:43:36,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:36,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 15:43:36,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2217, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:43:36,962 INFO L87 Difference]: Start difference. First operand 798 states and 851 transitions. Second operand has 49 states, 49 states have (on average 2.63265306122449) internal successors, (129), 49 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:38,353 INFO L93 Difference]: Finished difference Result 1052 states and 1115 transitions. [2024-12-02 15:43:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:43:38,354 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.63265306122449) internal successors, (129), 49 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 15:43:38,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:38,356 INFO L225 Difference]: With dead ends: 1052 [2024-12-02 15:43:38,356 INFO L226 Difference]: Without dead ends: 985 [2024-12-02 15:43:38,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=542, Invalid=4428, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:43:38,356 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 75 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:38,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 605 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:43:38,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2024-12-02 15:43:38,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 808. [2024-12-02 15:43:38,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.066914498141264) internal successors, (861), 807 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 861 transitions. [2024-12-02 15:43:38,548 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 861 transitions. Word has length 60 [2024-12-02 15:43:38,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:38,548 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 861 transitions. [2024-12-02 15:43:38,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.63265306122449) internal successors, (129), 49 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 861 transitions. [2024-12-02 15:43:38,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 15:43:38,549 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:38,549 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:38,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-12-02 15:43:38,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-12-02 15:43:38,750 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:38,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1475289063, now seen corresponding path program 61 times [2024-12-02 15:43:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:38,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284064501] [2024-12-02 15:43:38,750 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:43:39,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:39,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284064501] [2024-12-02 15:43:39,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284064501] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:39,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147989435] [2024-12-02 15:43:39,036 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:39,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:39,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:39,038 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:39,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-12-02 15:43:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:39,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 15:43:39,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:43:39,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:43:39,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147989435] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:39,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:39,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 39 [2024-12-02 15:43:39,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921571200] [2024-12-02 15:43:39,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:39,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 15:43:39,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:39,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 15:43:39,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:43:39,657 INFO L87 Difference]: Start difference. First operand 808 states and 861 transitions. Second operand has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 39 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:40,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:40,276 INFO L93 Difference]: Finished difference Result 850 states and 906 transitions. [2024-12-02 15:43:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:43:40,277 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 39 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 15:43:40,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:40,280 INFO L225 Difference]: With dead ends: 850 [2024-12-02 15:43:40,280 INFO L226 Difference]: Without dead ends: 844 [2024-12-02 15:43:40,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=2274, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 15:43:40,281 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 44 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:40,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 878 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:43:40,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-12-02 15:43:40,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 829. [2024-12-02 15:43:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 828 states have (on average 1.067632850241546) internal successors, (884), 828 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 884 transitions. [2024-12-02 15:43:40,513 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 884 transitions. Word has length 62 [2024-12-02 15:43:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:40,513 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 884 transitions. [2024-12-02 15:43:40,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 39 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 884 transitions. [2024-12-02 15:43:40,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 15:43:40,513 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:40,513 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:40,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-12-02 15:43:40,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:40,714 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:40,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:40,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1486879401, now seen corresponding path program 62 times [2024-12-02 15:43:40,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:40,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427942377] [2024-12-02 15:43:40,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:40,724 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:40,724 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:43:41,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427942377] [2024-12-02 15:43:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427942377] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229507907] [2024-12-02 15:43:41,064 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:41,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:41,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:41,066 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:41,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-12-02 15:43:41,152 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:41,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:41,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 15:43:41,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:43:41,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:43:41,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229507907] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:41,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:41,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 43 [2024-12-02 15:43:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207575901] [2024-12-02 15:43:41,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:41,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 15:43:41,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:41,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 15:43:41,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:43:41,775 INFO L87 Difference]: Start difference. First operand 829 states and 884 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:42,577 INFO L93 Difference]: Finished difference Result 853 states and 907 transitions. [2024-12-02 15:43:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:43:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 15:43:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:42,580 INFO L225 Difference]: With dead ends: 853 [2024-12-02 15:43:42,580 INFO L226 Difference]: Without dead ends: 809 [2024-12-02 15:43:42,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:43:42,581 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 65 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:42,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1247 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:43:42,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-12-02 15:43:42,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 808. [2024-12-02 15:43:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.0681536555142503) internal successors, (862), 807 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:42,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 862 transitions. [2024-12-02 15:43:42,780 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 862 transitions. Word has length 62 [2024-12-02 15:43:42,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:42,780 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 862 transitions. [2024-12-02 15:43:42,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:42,780 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 862 transitions. [2024-12-02 15:43:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 15:43:42,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:42,780 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:42,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-12-02 15:43:42,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:42,981 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:42,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:42,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2035977927, now seen corresponding path program 63 times [2024-12-02 15:43:42,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:42,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12449116] [2024-12-02 15:43:42,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:42,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:42,993 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:43:42,993 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:43:43,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:43,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12449116] [2024-12-02 15:43:43,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12449116] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:43,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718596699] [2024-12-02 15:43:43,356 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:43,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:43,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:43,358 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:43,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-12-02 15:43:43,450 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:43:43,450 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:43,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 15:43:43,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:43:43,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:43:43,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718596699] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:43,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:43,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2024-12-02 15:43:43,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522801381] [2024-12-02 15:43:43,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:43,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 15:43:43,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:43,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 15:43:43,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1695, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:43:43,980 INFO L87 Difference]: Start difference. First operand 808 states and 862 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:44,793 INFO L93 Difference]: Finished difference Result 833 states and 886 transitions. [2024-12-02 15:43:44,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 15:43:44,793 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 15:43:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:44,795 INFO L225 Difference]: With dead ends: 833 [2024-12-02 15:43:44,795 INFO L226 Difference]: Without dead ends: 791 [2024-12-02 15:43:44,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 15:43:44,795 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 86 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:44,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1886 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:43:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-12-02 15:43:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2024-12-02 15:43:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.0683544303797468) internal successors, (844), 790 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 844 transitions. [2024-12-02 15:43:44,980 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 844 transitions. Word has length 62 [2024-12-02 15:43:44,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:44,980 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 844 transitions. [2024-12-02 15:43:44,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 844 transitions. [2024-12-02 15:43:44,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 15:43:44,981 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:44,981 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:44,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-12-02 15:43:45,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:45,182 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:45,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1135231945, now seen corresponding path program 64 times [2024-12-02 15:43:45,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:45,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937269543] [2024-12-02 15:43:45,182 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:43:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:45,190 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:43:45,190 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:43:45,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:45,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937269543] [2024-12-02 15:43:45,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937269543] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:45,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899278245] [2024-12-02 15:43:45,614 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:43:45,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:45,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:45,616 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:45,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-12-02 15:43:45,715 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:43:45,715 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:45,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 15:43:45,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:43:46,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:43:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899278245] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:46,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:46,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2024-12-02 15:43:46,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502395294] [2024-12-02 15:43:46,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:46,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 15:43:46,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:46,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 15:43:46,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1785, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:43:46,304 INFO L87 Difference]: Start difference. First operand 791 states and 844 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:47,095 INFO L93 Difference]: Finished difference Result 818 states and 870 transitions. [2024-12-02 15:43:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:43:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 15:43:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:47,097 INFO L225 Difference]: With dead ends: 818 [2024-12-02 15:43:47,097 INFO L226 Difference]: Without dead ends: 778 [2024-12-02 15:43:47,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=177, Invalid=3129, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 15:43:47,097 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 110 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:47,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2226 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:43:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-12-02 15:43:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2024-12-02 15:43:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.0682110682110681) internal successors, (830), 777 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 830 transitions. [2024-12-02 15:43:47,312 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 830 transitions. Word has length 62 [2024-12-02 15:43:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:47,313 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 830 transitions. [2024-12-02 15:43:47,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 830 transitions. [2024-12-02 15:43:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 15:43:47,313 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:47,313 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:47,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-12-02 15:43:47,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:47,514 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:47,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:47,514 INFO L85 PathProgramCache]: Analyzing trace with hash 251097689, now seen corresponding path program 65 times [2024-12-02 15:43:47,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:47,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139782077] [2024-12-02 15:43:47,514 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:43:47,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:47,526 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:43:47,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:43:47,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:47,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139782077] [2024-12-02 15:43:47,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139782077] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:47,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752188545] [2024-12-02 15:43:47,945 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:43:47,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:47,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:47,947 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:47,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-12-02 15:43:48,036 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:43:48,036 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:48,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 15:43:48,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:43:48,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:43:48,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752188545] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:48,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:48,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2024-12-02 15:43:48,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130473138] [2024-12-02 15:43:48,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:48,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 15:43:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:48,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 15:43:48,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1962, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 15:43:48,586 INFO L87 Difference]: Start difference. First operand 778 states and 830 transitions. Second operand has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:49,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:49,634 INFO L93 Difference]: Finished difference Result 876 states and 934 transitions. [2024-12-02 15:43:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:43:49,634 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 15:43:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:49,636 INFO L225 Difference]: With dead ends: 876 [2024-12-02 15:43:49,636 INFO L226 Difference]: Without dead ends: 866 [2024-12-02 15:43:49,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=3481, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 15:43:49,636 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 147 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:49,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 2914 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:43:49,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2024-12-02 15:43:49,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 791. [2024-12-02 15:43:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.0683544303797468) internal successors, (844), 790 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 844 transitions. [2024-12-02 15:43:49,848 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 844 transitions. Word has length 62 [2024-12-02 15:43:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:49,848 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 844 transitions. [2024-12-02 15:43:49,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 844 transitions. [2024-12-02 15:43:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 15:43:49,848 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:49,848 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:49,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-12-02 15:43:50,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:50,049 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:50,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1406496131, now seen corresponding path program 66 times [2024-12-02 15:43:50,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:50,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760338126] [2024-12-02 15:43:50,049 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:50,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:50,062 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-12-02 15:43:50,062 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:50,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:50,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760338126] [2024-12-02 15:43:50,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760338126] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:50,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390706787] [2024-12-02 15:43:50,177 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:43:50,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:50,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:50,178 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:50,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-12-02 15:43:50,283 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-12-02 15:43:50,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:50,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 15:43:50,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:50,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:50,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390706787] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:50,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:50,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-12-02 15:43:50,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220835988] [2024-12-02 15:43:50,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:50,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 15:43:50,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:50,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 15:43:50,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:43:50,492 INFO L87 Difference]: Start difference. First operand 791 states and 844 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:50,959 INFO L93 Difference]: Finished difference Result 1110 states and 1201 transitions. [2024-12-02 15:43:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 15:43:50,960 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 15:43:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:50,961 INFO L225 Difference]: With dead ends: 1110 [2024-12-02 15:43:50,961 INFO L226 Difference]: Without dead ends: 921 [2024-12-02 15:43:50,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 110 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 15:43:50,962 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:50,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 274 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:43:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-12-02 15:43:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 920. [2024-12-02 15:43:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 1.0696409140369967) internal successors, (983), 919 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 983 transitions. [2024-12-02 15:43:51,195 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 983 transitions. Word has length 64 [2024-12-02 15:43:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:51,195 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 983 transitions. [2024-12-02 15:43:51,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 983 transitions. [2024-12-02 15:43:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 15:43:51,196 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:51,196 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:51,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-12-02 15:43:51,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-12-02 15:43:51,397 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:51,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash 905932733, now seen corresponding path program 67 times [2024-12-02 15:43:51,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:51,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064715131] [2024-12-02 15:43:51,397 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:51,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:51,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064715131] [2024-12-02 15:43:51,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064715131] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:51,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983809630] [2024-12-02 15:43:51,525 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:43:51,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:51,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:51,527 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:51,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-12-02 15:43:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:51,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 15:43:51,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:51,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:43:51,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983809630] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:51,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:51,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-12-02 15:43:51,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280846162] [2024-12-02 15:43:51,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:51,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 15:43:51,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:51,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 15:43:51,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:43:51,831 INFO L87 Difference]: Start difference. First operand 920 states and 983 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:52,368 INFO L93 Difference]: Finished difference Result 1036 states and 1111 transitions. [2024-12-02 15:43:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 15:43:52,368 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 15:43:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:52,371 INFO L225 Difference]: With dead ends: 1036 [2024-12-02 15:43:52,371 INFO L226 Difference]: Without dead ends: 1013 [2024-12-02 15:43:52,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 110 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 15:43:52,372 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:52,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 213 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:43:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2024-12-02 15:43:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 979. [2024-12-02 15:43:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 978 states have (on average 1.0756646216768917) internal successors, (1052), 978 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1052 transitions. [2024-12-02 15:43:52,637 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1052 transitions. Word has length 64 [2024-12-02 15:43:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:52,637 INFO L471 AbstractCegarLoop]: Abstraction has 979 states and 1052 transitions. [2024-12-02 15:43:52,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1052 transitions. [2024-12-02 15:43:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 15:43:52,638 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:52,638 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:52,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-12-02 15:43:52,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-12-02 15:43:52,838 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:52,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:52,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1766587523, now seen corresponding path program 68 times [2024-12-02 15:43:52,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:52,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028616795] [2024-12-02 15:43:52,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:52,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:52,850 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:52,850 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:53,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028616795] [2024-12-02 15:43:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028616795] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993223476] [2024-12-02 15:43:53,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:43:53,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:53,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:53,293 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:53,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-12-02 15:43:53,385 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:43:53,385 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:53,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 15:43:53,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:54,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:54,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993223476] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:54,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:54,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 56 [2024-12-02 15:43:54,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417385064] [2024-12-02 15:43:54,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:54,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 15:43:54,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:54,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 15:43:54,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2896, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 15:43:54,856 INFO L87 Difference]: Start difference. First operand 979 states and 1052 transitions. Second operand has 56 states, 56 states have (on average 2.517857142857143) internal successors, (141), 56 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:57,253 INFO L93 Difference]: Finished difference Result 1239 states and 1326 transitions. [2024-12-02 15:43:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:43:57,254 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.517857142857143) internal successors, (141), 56 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 15:43:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:57,258 INFO L225 Difference]: With dead ends: 1239 [2024-12-02 15:43:57,258 INFO L226 Difference]: Without dead ends: 1205 [2024-12-02 15:43:57,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 87 SyntacticMatches, 10 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=452, Invalid=6190, Unknown=0, NotChecked=0, Total=6642 [2024-12-02 15:43:57,259 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 14 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:57,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1046 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:43:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2024-12-02 15:43:57,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1078. [2024-12-02 15:43:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 1.075208913649025) internal successors, (1158), 1077 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1158 transitions. [2024-12-02 15:43:57,560 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1158 transitions. Word has length 64 [2024-12-02 15:43:57,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:57,560 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1158 transitions. [2024-12-02 15:43:57,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.517857142857143) internal successors, (141), 56 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:43:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1158 transitions. [2024-12-02 15:43:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 15:43:57,562 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:57,562 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:57,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-12-02 15:43:57,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-12-02 15:43:57,762 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:57,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash -596199235, now seen corresponding path program 69 times [2024-12-02 15:43:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:57,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015695956] [2024-12-02 15:43:57,763 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:57,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:57,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-12-02 15:43:57,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015695956] [2024-12-02 15:43:58,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015695956] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203063465] [2024-12-02 15:43:58,125 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:43:58,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:58,126 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:58,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-12-02 15:43:58,223 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-12-02 15:43:58,223 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:43:58,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 15:43:58,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:43:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:58,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:43:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:43:59,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203063465] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:43:59,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:43:59,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2024-12-02 15:43:59,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139191044] [2024-12-02 15:43:59,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:43:59,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 15:43:59,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:59,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 15:43:59,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2706, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 15:43:59,549 INFO L87 Difference]: Start difference. First operand 1078 states and 1158 transitions. Second operand has 54 states, 54 states have (on average 2.574074074074074) internal successors, (139), 54 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:01,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:01,183 INFO L93 Difference]: Finished difference Result 1457 states and 1549 transitions. [2024-12-02 15:44:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 15:44:01,184 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.574074074074074) internal successors, (139), 54 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 15:44:01,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:01,186 INFO L225 Difference]: With dead ends: 1457 [2024-12-02 15:44:01,186 INFO L226 Difference]: Without dead ends: 1383 [2024-12-02 15:44:01,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 9 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=664, Invalid=5498, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 15:44:01,187 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 78 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:01,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 575 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:44:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-12-02 15:44:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1090. [2024-12-02 15:44:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1089 states have (on average 1.0743801652892562) internal successors, (1170), 1089 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1170 transitions. [2024-12-02 15:44:01,528 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1170 transitions. Word has length 64 [2024-12-02 15:44:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:01,528 INFO L471 AbstractCegarLoop]: Abstraction has 1090 states and 1170 transitions. [2024-12-02 15:44:01,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.574074074074074) internal successors, (139), 54 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1170 transitions. [2024-12-02 15:44:01,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 15:44:01,529 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:01,529 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:01,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-12-02 15:44:01,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-12-02 15:44:01,729 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:01,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:01,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1475568615, now seen corresponding path program 70 times [2024-12-02 15:44:01,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:01,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476538193] [2024-12-02 15:44:01,729 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:44:01,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:01,744 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:44:01,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-12-02 15:44:01,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:01,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476538193] [2024-12-02 15:44:01,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476538193] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:01,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913287830] [2024-12-02 15:44:01,925 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:44:01,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:01,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:01,927 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:01,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-12-02 15:44:02,022 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:44:02,022 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:02,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:44:02,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-12-02 15:44:02,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-12-02 15:44:02,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913287830] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:02,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:02,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2024-12-02 15:44:02,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965433669] [2024-12-02 15:44:02,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:02,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 15:44:02,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:02,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 15:44:02,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:44:02,660 INFO L87 Difference]: Start difference. First operand 1090 states and 1170 transitions. Second operand has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:03,671 INFO L93 Difference]: Finished difference Result 1290 states and 1379 transitions. [2024-12-02 15:44:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 15:44:03,671 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-02 15:44:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:03,675 INFO L225 Difference]: With dead ends: 1290 [2024-12-02 15:44:03,675 INFO L226 Difference]: Without dead ends: 1232 [2024-12-02 15:44:03,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 107 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 15:44:03,675 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:03,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 649 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:44:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2024-12-02 15:44:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1207. [2024-12-02 15:44:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 1.066334991708126) internal successors, (1286), 1206 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1286 transitions. [2024-12-02 15:44:03,999 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1286 transitions. Word has length 66 [2024-12-02 15:44:03,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:03,999 INFO L471 AbstractCegarLoop]: Abstraction has 1207 states and 1286 transitions. [2024-12-02 15:44:03,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1286 transitions. [2024-12-02 15:44:04,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 15:44:04,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:04,000 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:04,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-12-02 15:44:04,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-12-02 15:44:04,200 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:04,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash 156292769, now seen corresponding path program 71 times [2024-12-02 15:44:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:04,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178781234] [2024-12-02 15:44:04,201 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:44:04,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:04,213 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:44:04,213 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:44:04,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178781234] [2024-12-02 15:44:04,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178781234] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528464327] [2024-12-02 15:44:04,559 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:44:04,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:04,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:04,560 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:04,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-12-02 15:44:04,662 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:44:04,662 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:04,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 15:44:04,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:44:05,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:44:05,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528464327] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:05,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:05,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 41 [2024-12-02 15:44:05,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428520969] [2024-12-02 15:44:05,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:05,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 15:44:05,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:05,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 15:44:05,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1529, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 15:44:05,275 INFO L87 Difference]: Start difference. First operand 1207 states and 1286 transitions. Second operand has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:06,097 INFO L93 Difference]: Finished difference Result 1270 states and 1352 transitions. [2024-12-02 15:44:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:44:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-02 15:44:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:06,101 INFO L225 Difference]: With dead ends: 1270 [2024-12-02 15:44:06,101 INFO L226 Difference]: Without dead ends: 1247 [2024-12-02 15:44:06,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=2574, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:44:06,101 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 58 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:06,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1214 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:44:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2024-12-02 15:44:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1213. [2024-12-02 15:44:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1212 states have (on average 1.066831683168317) internal successors, (1293), 1212 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1293 transitions. [2024-12-02 15:44:06,451 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1293 transitions. Word has length 66 [2024-12-02 15:44:06,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:06,451 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1293 transitions. [2024-12-02 15:44:06,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1293 transitions. [2024-12-02 15:44:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 15:44:06,452 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:06,452 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:06,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-12-02 15:44:06,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:06,653 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:06,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:06,653 INFO L85 PathProgramCache]: Analyzing trace with hash -407369063, now seen corresponding path program 72 times [2024-12-02 15:44:06,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:06,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114291768] [2024-12-02 15:44:06,653 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:44:06,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:06,665 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-12-02 15:44:06,665 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-12-02 15:44:06,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:06,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114291768] [2024-12-02 15:44:06,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114291768] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:06,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854290095] [2024-12-02 15:44:06,861 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:44:06,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:06,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:06,862 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:06,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-12-02 15:44:06,971 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-12-02 15:44:06,971 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:06,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:44:06,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-12-02 15:44:07,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-12-02 15:44:07,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854290095] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:07,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:07,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-12-02 15:44:07,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561476124] [2024-12-02 15:44:07,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:07,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 15:44:07,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:07,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 15:44:07,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:44:07,599 INFO L87 Difference]: Start difference. First operand 1213 states and 1293 transitions. Second operand has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:08,525 INFO L93 Difference]: Finished difference Result 1326 states and 1417 transitions. [2024-12-02 15:44:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 15:44:08,525 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-02 15:44:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:08,528 INFO L225 Difference]: With dead ends: 1326 [2024-12-02 15:44:08,528 INFO L226 Difference]: Without dead ends: 1190 [2024-12-02 15:44:08,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=1899, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 15:44:08,529 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:08,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 519 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:44:08,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2024-12-02 15:44:08,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1189. [2024-12-02 15:44:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1188 states have (on average 1.0597643097643097) internal successors, (1259), 1188 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1259 transitions. [2024-12-02 15:44:08,859 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1259 transitions. Word has length 66 [2024-12-02 15:44:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:08,859 INFO L471 AbstractCegarLoop]: Abstraction has 1189 states and 1259 transitions. [2024-12-02 15:44:08,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:08,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1259 transitions. [2024-12-02 15:44:08,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 15:44:08,860 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:08,861 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:08,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-12-02 15:44:09,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:09,061 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:09,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:09,061 INFO L85 PathProgramCache]: Analyzing trace with hash -157631695, now seen corresponding path program 73 times [2024-12-02 15:44:09,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:09,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949553107] [2024-12-02 15:44:09,061 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:44:09,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:44:09,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:09,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949553107] [2024-12-02 15:44:09,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949553107] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:09,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46696929] [2024-12-02 15:44:09,521 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:44:09,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:09,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:09,523 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:09,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-12-02 15:44:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:09,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 15:44:09,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:44:10,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:44:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46696929] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:10,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:10,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2024-12-02 15:44:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065389891] [2024-12-02 15:44:10,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:10,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 15:44:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:10,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 15:44:10,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1775, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:44:10,302 INFO L87 Difference]: Start difference. First operand 1189 states and 1259 transitions. Second operand has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:11,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:11,231 INFO L93 Difference]: Finished difference Result 1215 states and 1284 transitions. [2024-12-02 15:44:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 15:44:11,231 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-02 15:44:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:11,233 INFO L225 Difference]: With dead ends: 1215 [2024-12-02 15:44:11,233 INFO L226 Difference]: Without dead ends: 1169 [2024-12-02 15:44:11,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=189, Invalid=3003, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 15:44:11,234 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 77 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:11,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1634 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:44:11,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-12-02 15:44:11,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1168. [2024-12-02 15:44:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.0599828620394174) internal successors, (1237), 1167 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1237 transitions. [2024-12-02 15:44:11,596 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1237 transitions. Word has length 66 [2024-12-02 15:44:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:11,596 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1237 transitions. [2024-12-02 15:44:11,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1237 transitions. [2024-12-02 15:44:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 15:44:11,597 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:11,597 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:11,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-12-02 15:44:11,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:11,797 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:11,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1123580865, now seen corresponding path program 74 times [2024-12-02 15:44:11,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:11,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135176494] [2024-12-02 15:44:11,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:44:11,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:11,809 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:44:11,809 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:44:12,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135176494] [2024-12-02 15:44:12,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135176494] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735226243] [2024-12-02 15:44:12,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:44:12,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:12,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:12,260 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:12,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-12-02 15:44:12,356 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:44:12,357 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:12,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 15:44:12,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:44:12,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:44:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735226243] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:13,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:13,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 46 [2024-12-02 15:44:13,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133111765] [2024-12-02 15:44:13,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:13,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 15:44:13,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:13,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 15:44:13,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1952, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 15:44:13,001 INFO L87 Difference]: Start difference. First operand 1168 states and 1237 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:14,033 INFO L93 Difference]: Finished difference Result 1195 states and 1263 transitions. [2024-12-02 15:44:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:44:14,033 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-02 15:44:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:14,035 INFO L225 Difference]: With dead ends: 1195 [2024-12-02 15:44:14,035 INFO L226 Difference]: Without dead ends: 1151 [2024-12-02 15:44:14,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=3349, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:44:14,036 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 101 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:14,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 2418 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:44:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2024-12-02 15:44:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1151. [2024-12-02 15:44:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 1.06) internal successors, (1219), 1150 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1219 transitions. [2024-12-02 15:44:14,367 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1219 transitions. Word has length 66 [2024-12-02 15:44:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:14,367 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 1219 transitions. [2024-12-02 15:44:14,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 46 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1219 transitions. [2024-12-02 15:44:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 15:44:14,368 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:14,368 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:14,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-12-02 15:44:14,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2024-12-02 15:44:14,569 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:14,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:14,569 INFO L85 PathProgramCache]: Analyzing trace with hash 949164113, now seen corresponding path program 75 times [2024-12-02 15:44:14,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:14,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391794480] [2024-12-02 15:44:14,569 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:44:14,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:14,583 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:44:14,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:44:15,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:15,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391794480] [2024-12-02 15:44:15,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391794480] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:15,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995942379] [2024-12-02 15:44:15,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:44:15,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:15,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:15,095 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:15,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-12-02 15:44:15,189 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:44:15,189 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:15,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-02 15:44:15,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:44:15,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:44:15,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995942379] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:15,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:15,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 48 [2024-12-02 15:44:15,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766910512] [2024-12-02 15:44:15,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:15,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 15:44:15,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:15,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 15:44:15,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=2138, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 15:44:15,869 INFO L87 Difference]: Start difference. First operand 1151 states and 1219 transitions. Second operand has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:17,084 INFO L93 Difference]: Finished difference Result 1180 states and 1247 transitions. [2024-12-02 15:44:17,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:44:17,084 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-02 15:44:17,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:17,086 INFO L225 Difference]: With dead ends: 1180 [2024-12-02 15:44:17,086 INFO L226 Difference]: Without dead ends: 1138 [2024-12-02 15:44:17,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=3714, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 15:44:17,087 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 125 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:17,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 2883 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:44:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2024-12-02 15:44:17,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2024-12-02 15:44:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 1.059806508355321) internal successors, (1205), 1137 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1205 transitions. [2024-12-02 15:44:17,397 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1205 transitions. Word has length 66 [2024-12-02 15:44:17,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:17,397 INFO L471 AbstractCegarLoop]: Abstraction has 1138 states and 1205 transitions. [2024-12-02 15:44:17,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1205 transitions. [2024-12-02 15:44:17,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 15:44:17,398 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:17,399 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:17,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-12-02 15:44:17,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2024-12-02 15:44:17,599 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:17,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:17,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1733529825, now seen corresponding path program 76 times [2024-12-02 15:44:17,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:17,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605920925] [2024-12-02 15:44:17,599 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:44:17,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:17,608 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:44:17,608 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:44:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:18,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605920925] [2024-12-02 15:44:18,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605920925] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:18,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376686519] [2024-12-02 15:44:18,132 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:44:18,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:18,133 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:18,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-12-02 15:44:18,226 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:44:18,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:18,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 15:44:18,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:44:18,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:44:18,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376686519] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:18,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:18,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2024-12-02 15:44:18,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988856522] [2024-12-02 15:44:18,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:18,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 15:44:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:18,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 15:44:18,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2237, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:44:18,895 INFO L87 Difference]: Start difference. First operand 1138 states and 1205 transitions. Second operand has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:20,180 INFO L93 Difference]: Finished difference Result 1255 states and 1329 transitions. [2024-12-02 15:44:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:44:20,180 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-02 15:44:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:20,182 INFO L225 Difference]: With dead ends: 1255 [2024-12-02 15:44:20,183 INFO L226 Difference]: Without dead ends: 1245 [2024-12-02 15:44:20,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=190, Invalid=3970, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 15:44:20,183 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 157 mSDsluCounter, 3291 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:20,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 3393 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1889 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:44:20,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2024-12-02 15:44:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1151. [2024-12-02 15:44:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 1.06) internal successors, (1219), 1150 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1219 transitions. [2024-12-02 15:44:20,551 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1219 transitions. Word has length 66 [2024-12-02 15:44:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:20,551 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 1219 transitions. [2024-12-02 15:44:20,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1219 transitions. [2024-12-02 15:44:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 15:44:20,552 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:20,552 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:20,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-12-02 15:44:20,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2024-12-02 15:44:20,753 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:20,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:20,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1235697141, now seen corresponding path program 77 times [2024-12-02 15:44:20,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:20,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488273439] [2024-12-02 15:44:20,753 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:44:20,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:20,764 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-12-02 15:44:20,764 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:44:20,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488273439] [2024-12-02 15:44:20,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488273439] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815704106] [2024-12-02 15:44:20,880 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:44:20,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:20,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:20,882 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:20,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-12-02 15:44:21,007 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-12-02 15:44:21,007 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:21,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 15:44:21,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:44:21,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:44:21,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815704106] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:21,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:21,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2024-12-02 15:44:21,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709837609] [2024-12-02 15:44:21,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:21,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 15:44:21,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:21,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 15:44:21,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:44:21,185 INFO L87 Difference]: Start difference. First operand 1151 states and 1219 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:21,712 INFO L93 Difference]: Finished difference Result 1205 states and 1273 transitions. [2024-12-02 15:44:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:44:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 15:44:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:21,715 INFO L225 Difference]: With dead ends: 1205 [2024-12-02 15:44:21,715 INFO L226 Difference]: Without dead ends: 1199 [2024-12-02 15:44:21,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 117 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=469, Invalid=863, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:44:21,715 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 139 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:21,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 148 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2024-12-02 15:44:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1111. [2024-12-02 15:44:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 1.0585585585585586) internal successors, (1175), 1110 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1175 transitions. [2024-12-02 15:44:22,035 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1175 transitions. Word has length 68 [2024-12-02 15:44:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:22,035 INFO L471 AbstractCegarLoop]: Abstraction has 1111 states and 1175 transitions. [2024-12-02 15:44:22,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:22,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1175 transitions. [2024-12-02 15:44:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 15:44:22,036 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:22,036 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:22,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-12-02 15:44:22,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:22,236 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:22,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:22,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1933450549, now seen corresponding path program 78 times [2024-12-02 15:44:22,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:22,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811819495] [2024-12-02 15:44:22,237 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:44:22,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:22,254 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-12-02 15:44:22,254 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:44:22,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:22,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811819495] [2024-12-02 15:44:22,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811819495] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:22,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917374] [2024-12-02 15:44:22,378 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:44:22,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:22,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:22,380 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:22,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-12-02 15:44:22,490 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-12-02 15:44:22,490 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:22,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 15:44:22,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:44:22,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:44:22,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917374] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:22,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:22,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-12-02 15:44:22,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615573643] [2024-12-02 15:44:22,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:22,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:44:22,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:22,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:44:22,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:44:22,728 INFO L87 Difference]: Start difference. First operand 1111 states and 1175 transitions. Second operand has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:23,364 INFO L93 Difference]: Finished difference Result 1352 states and 1437 transitions. [2024-12-02 15:44:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:44:23,364 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 15:44:23,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:23,366 INFO L225 Difference]: With dead ends: 1352 [2024-12-02 15:44:23,366 INFO L226 Difference]: Without dead ends: 1142 [2024-12-02 15:44:23,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 116 SyntacticMatches, 12 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=509, Invalid=973, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:44:23,367 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 105 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:23,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 299 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:44:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2024-12-02 15:44:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1131. [2024-12-02 15:44:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 1.0575221238938053) internal successors, (1195), 1130 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1195 transitions. [2024-12-02 15:44:23,666 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1195 transitions. Word has length 68 [2024-12-02 15:44:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:23,667 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1195 transitions. [2024-12-02 15:44:23,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:23,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1195 transitions. [2024-12-02 15:44:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 15:44:23,667 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:23,667 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:23,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-12-02 15:44:23,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:23,868 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:23,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1369772027, now seen corresponding path program 79 times [2024-12-02 15:44:23,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:23,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840839674] [2024-12-02 15:44:23,868 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:44:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:44:24,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:24,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840839674] [2024-12-02 15:44:24,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840839674] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:24,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225760664] [2024-12-02 15:44:24,342 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:44:24,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:24,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:24,343 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:24,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-12-02 15:44:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:24,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 15:44:24,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:44:25,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 21 proven. 200 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:44:26,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225760664] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:26,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:26,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 60 [2024-12-02 15:44:26,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260631117] [2024-12-02 15:44:26,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:26,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 15:44:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:26,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 15:44:26,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3363, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:44:26,188 INFO L87 Difference]: Start difference. First operand 1131 states and 1195 transitions. Second operand has 60 states, 60 states have (on average 2.5166666666666666) internal successors, (151), 60 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:29,231 INFO L93 Difference]: Finished difference Result 1420 states and 1497 transitions. [2024-12-02 15:44:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 15:44:29,231 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.5166666666666666) internal successors, (151), 60 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 15:44:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:29,234 INFO L225 Difference]: With dead ends: 1420 [2024-12-02 15:44:29,234 INFO L226 Difference]: Without dead ends: 1384 [2024-12-02 15:44:29,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 91 SyntacticMatches, 11 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=495, Invalid=7515, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 15:44:29,235 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 12 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:29,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1194 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:44:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2024-12-02 15:44:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1245. [2024-12-02 15:44:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1244 states have (on average 1.0570739549839228) internal successors, (1315), 1244 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1315 transitions. [2024-12-02 15:44:29,609 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1315 transitions. Word has length 68 [2024-12-02 15:44:29,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:29,609 INFO L471 AbstractCegarLoop]: Abstraction has 1245 states and 1315 transitions. [2024-12-02 15:44:29,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.5166666666666666) internal successors, (151), 60 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:29,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1315 transitions. [2024-12-02 15:44:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 15:44:29,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:29,610 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:29,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-12-02 15:44:29,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:29,810 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:29,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:29,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1908058811, now seen corresponding path program 80 times [2024-12-02 15:44:29,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:29,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412128905] [2024-12-02 15:44:29,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:44:29,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:29,820 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:44:29,820 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 21 proven. 200 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:44:30,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:30,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412128905] [2024-12-02 15:44:30,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412128905] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:30,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830509565] [2024-12-02 15:44:30,268 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:44:30,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:30,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:30,269 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:30,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-12-02 15:44:30,371 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:44:30,371 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:30,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 15:44:30,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 21 proven. 200 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:44:31,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 21 proven. 200 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:44:31,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830509565] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:31,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:31,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2024-12-02 15:44:31,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95242292] [2024-12-02 15:44:31,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:31,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-12-02 15:44:31,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:31,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-12-02 15:44:31,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3250, Unknown=0, NotChecked=0, Total=3422 [2024-12-02 15:44:31,977 INFO L87 Difference]: Start difference. First operand 1245 states and 1315 transitions. Second operand has 59 states, 59 states have (on average 2.5254237288135593) internal successors, (149), 59 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:34,161 INFO L93 Difference]: Finished difference Result 1676 states and 1758 transitions. [2024-12-02 15:44:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:44:34,161 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.5254237288135593) internal successors, (149), 59 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 15:44:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:34,164 INFO L225 Difference]: With dead ends: 1676 [2024-12-02 15:44:34,164 INFO L226 Difference]: Without dead ends: 1598 [2024-12-02 15:44:34,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 92 SyntacticMatches, 10 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=792, Invalid=6690, Unknown=0, NotChecked=0, Total=7482 [2024-12-02 15:44:34,165 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 65 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:34,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 658 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:44:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2024-12-02 15:44:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1257. [2024-12-02 15:44:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1256 states have (on average 1.0565286624203822) internal successors, (1327), 1256 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1327 transitions. [2024-12-02 15:44:34,539 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1327 transitions. Word has length 68 [2024-12-02 15:44:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:34,540 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1327 transitions. [2024-12-02 15:44:34,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.5254237288135593) internal successors, (149), 59 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1327 transitions. [2024-12-02 15:44:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:34,540 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:34,541 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:34,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-12-02 15:44:34,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-12-02 15:44:34,741 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:34,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash -881473895, now seen corresponding path program 81 times [2024-12-02 15:44:34,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:34,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665376777] [2024-12-02 15:44:34,741 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:44:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:34,754 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-12-02 15:44:34,754 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:44:35,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:35,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665376777] [2024-12-02 15:44:35,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665376777] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:35,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706314832] [2024-12-02 15:44:35,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:44:35,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:35,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:35,069 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:35,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-12-02 15:44:35,168 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-12-02 15:44:35,168 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:35,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 15:44:35,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:44:35,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:44:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706314832] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:35,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:35,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 43 [2024-12-02 15:44:35,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487399417] [2024-12-02 15:44:35,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:35,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 15:44:35,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:35,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 15:44:35,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:44:35,756 INFO L87 Difference]: Start difference. First operand 1257 states and 1327 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:36,591 INFO L93 Difference]: Finished difference Result 1303 states and 1376 transitions. [2024-12-02 15:44:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:44:36,592 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 15:44:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:36,594 INFO L225 Difference]: With dead ends: 1303 [2024-12-02 15:44:36,594 INFO L226 Difference]: Without dead ends: 1297 [2024-12-02 15:44:36,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=2774, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:44:36,594 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 53 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:36,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 935 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:44:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2024-12-02 15:44:36,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1280. [2024-12-02 15:44:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.0570758405003908) internal successors, (1352), 1279 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:36,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1352 transitions. [2024-12-02 15:44:36,998 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1352 transitions. Word has length 70 [2024-12-02 15:44:36,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:36,998 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1352 transitions. [2024-12-02 15:44:36,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1352 transitions. [2024-12-02 15:44:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:36,999 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:36,999 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:37,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-12-02 15:44:37,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:37,200 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:37,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1031313705, now seen corresponding path program 82 times [2024-12-02 15:44:37,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:37,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850739586] [2024-12-02 15:44:37,200 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:44:37,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:37,211 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:44:37,211 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:44:37,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:37,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850739586] [2024-12-02 15:44:37,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850739586] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:37,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776248292] [2024-12-02 15:44:37,662 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:44:37,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:37,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:37,664 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:37,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-12-02 15:44:37,763 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:44:37,763 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:37,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 15:44:37,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:44:38,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:44:38,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776248292] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:38,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:38,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2024-12-02 15:44:38,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180626120] [2024-12-02 15:44:38,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:38,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 15:44:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:38,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 15:44:38,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1774, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:44:38,396 INFO L87 Difference]: Start difference. First operand 1280 states and 1352 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:39,219 INFO L93 Difference]: Finished difference Result 1306 states and 1377 transitions. [2024-12-02 15:44:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 15:44:39,220 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 15:44:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:39,222 INFO L225 Difference]: With dead ends: 1306 [2024-12-02 15:44:39,222 INFO L226 Difference]: Without dead ends: 1256 [2024-12-02 15:44:39,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=2999, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 15:44:39,223 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 65 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:39,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1326 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:44:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2024-12-02 15:44:39,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1255. [2024-12-02 15:44:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.0574162679425838) internal successors, (1326), 1254 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1326 transitions. [2024-12-02 15:44:39,612 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1326 transitions. Word has length 70 [2024-12-02 15:44:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:39,613 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1326 transitions. [2024-12-02 15:44:39,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1326 transitions. [2024-12-02 15:44:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:39,613 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:39,613 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:39,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-12-02 15:44:39,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:39,814 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:39,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2122070087, now seen corresponding path program 83 times [2024-12-02 15:44:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:39,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119564611] [2024-12-02 15:44:39,814 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:44:39,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:39,825 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:44:39,825 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:44:40,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119564611] [2024-12-02 15:44:40,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119564611] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561613922] [2024-12-02 15:44:40,221 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:44:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:40,223 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:40,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-12-02 15:44:40,316 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-12-02 15:44:40,316 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:40,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 15:44:40,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:44:40,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:44:41,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561613922] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:41,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:41,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 46 [2024-12-02 15:44:41,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896870668] [2024-12-02 15:44:41,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:41,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 15:44:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:41,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 15:44:41,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1951, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 15:44:41,043 INFO L87 Difference]: Start difference. First operand 1255 states and 1326 transitions. Second operand has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:42,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:42,090 INFO L93 Difference]: Finished difference Result 1282 states and 1352 transitions. [2024-12-02 15:44:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:44:42,091 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 15:44:42,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:42,093 INFO L225 Difference]: With dead ends: 1282 [2024-12-02 15:44:42,093 INFO L226 Difference]: Without dead ends: 1234 [2024-12-02 15:44:42,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=3345, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:44:42,094 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 86 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:42,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 2003 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:44:42,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2024-12-02 15:44:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2024-12-02 15:44:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 1.0575831305758312) internal successors, (1304), 1233 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1304 transitions. [2024-12-02 15:44:42,471 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1304 transitions. Word has length 70 [2024-12-02 15:44:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:42,471 INFO L471 AbstractCegarLoop]: Abstraction has 1234 states and 1304 transitions. [2024-12-02 15:44:42,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1304 transitions. [2024-12-02 15:44:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:42,472 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:42,472 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:42,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-12-02 15:44:42,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2024-12-02 15:44:42,672 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:42,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash -190819767, now seen corresponding path program 84 times [2024-12-02 15:44:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364485367] [2024-12-02 15:44:42,673 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:44:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:42,688 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-12-02 15:44:42,688 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:44:43,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364485367] [2024-12-02 15:44:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364485367] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037916909] [2024-12-02 15:44:43,160 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:44:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:43,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:43,162 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:43,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-12-02 15:44:43,261 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-12-02 15:44:43,261 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:43,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-02 15:44:43,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:44:43,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:44:43,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037916909] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:43,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:43,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 49 [2024-12-02 15:44:43,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257905560] [2024-12-02 15:44:43,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:43,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 15:44:43,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:43,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 15:44:43,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2227, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:44:43,955 INFO L87 Difference]: Start difference. First operand 1234 states and 1304 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:45,208 INFO L93 Difference]: Finished difference Result 1263 states and 1332 transitions. [2024-12-02 15:44:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:44:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 15:44:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:45,210 INFO L225 Difference]: With dead ends: 1263 [2024-12-02 15:44:45,210 INFO L226 Difference]: Without dead ends: 1217 [2024-12-02 15:44:45,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=202, Invalid=3830, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:44:45,211 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 113 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:45,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2498 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:44:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-12-02 15:44:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2024-12-02 15:44:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1216 states have (on average 1.0575657894736843) internal successors, (1286), 1216 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1286 transitions. [2024-12-02 15:44:45,578 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1286 transitions. Word has length 70 [2024-12-02 15:44:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:45,578 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1286 transitions. [2024-12-02 15:44:45,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1286 transitions. [2024-12-02 15:44:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:45,579 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:45,579 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:45,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-12-02 15:44:45,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2024-12-02 15:44:45,780 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:45,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2120795943, now seen corresponding path program 85 times [2024-12-02 15:44:45,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:45,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818397402] [2024-12-02 15:44:45,780 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:44:45,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:44:46,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:46,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818397402] [2024-12-02 15:44:46,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818397402] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:46,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887021471] [2024-12-02 15:44:46,312 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:44:46,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:46,314 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:46,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-12-02 15:44:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:46,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 15:44:46,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:44:46,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:44:47,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887021471] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:47,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:47,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 51 [2024-12-02 15:44:47,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867727241] [2024-12-02 15:44:47,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:47,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 15:44:47,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:47,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 15:44:47,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2424, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 15:44:47,119 INFO L87 Difference]: Start difference. First operand 1217 states and 1286 transitions. Second operand has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:48,470 INFO L93 Difference]: Finished difference Result 1248 states and 1316 transitions. [2024-12-02 15:44:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:44:48,471 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 15:44:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:48,473 INFO L225 Difference]: With dead ends: 1248 [2024-12-02 15:44:48,473 INFO L226 Difference]: Without dead ends: 1204 [2024-12-02 15:44:48,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=204, Invalid=4218, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 15:44:48,474 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 137 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:48,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 3232 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:44:48,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2024-12-02 15:44:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1204. [2024-12-02 15:44:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 1.057356608478803) internal successors, (1272), 1203 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1272 transitions. [2024-12-02 15:44:48,890 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1272 transitions. Word has length 70 [2024-12-02 15:44:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:48,890 INFO L471 AbstractCegarLoop]: Abstraction has 1204 states and 1272 transitions. [2024-12-02 15:44:48,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1272 transitions. [2024-12-02 15:44:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:48,891 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:48,891 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:48,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2024-12-02 15:44:49,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:49,091 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:49,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:49,092 INFO L85 PathProgramCache]: Analyzing trace with hash 821132137, now seen corresponding path program 86 times [2024-12-02 15:44:49,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:49,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670570988] [2024-12-02 15:44:49,092 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:44:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:49,102 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:44:49,102 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:44:49,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670570988] [2024-12-02 15:44:49,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670570988] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228118914] [2024-12-02 15:44:49,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:44:49,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:49,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:49,715 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:49,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-12-02 15:44:49,811 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:44:49,811 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:49,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 15:44:49,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:44:50,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:44:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228118914] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:50,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:50,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 53 [2024-12-02 15:44:50,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524670342] [2024-12-02 15:44:50,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:50,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 15:44:50,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:50,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 15:44:50,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2629, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:44:50,549 INFO L87 Difference]: Start difference. First operand 1204 states and 1272 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:52,031 INFO L93 Difference]: Finished difference Result 1325 states and 1400 transitions. [2024-12-02 15:44:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:44:52,031 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 15:44:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:52,034 INFO L225 Difference]: With dead ends: 1325 [2024-12-02 15:44:52,034 INFO L226 Difference]: Without dead ends: 1315 [2024-12-02 15:44:52,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=206, Invalid=4624, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 15:44:52,035 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 173 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:52,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 3920 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:44:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2024-12-02 15:44:52,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1217. [2024-12-02 15:44:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1216 states have (on average 1.0575657894736843) internal successors, (1286), 1216 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1286 transitions. [2024-12-02 15:44:52,453 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1286 transitions. Word has length 70 [2024-12-02 15:44:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:52,454 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1286 transitions. [2024-12-02 15:44:52,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1286 transitions. [2024-12-02 15:44:52,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 15:44:52,455 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:52,455 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:52,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-12-02 15:44:52,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:52,656 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:52,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash -194468099, now seen corresponding path program 87 times [2024-12-02 15:44:52,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:52,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817091330] [2024-12-02 15:44:52,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:44:52,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:52,668 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 15:44:52,668 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:44:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817091330] [2024-12-02 15:44:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817091330] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:44:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609969859] [2024-12-02 15:44:52,790 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:44:52,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:52,792 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:44:52,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-12-02 15:44:52,894 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 15:44:52,894 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:44:52,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 15:44:52,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:44:53,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:44:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:44:53,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609969859] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:44:53,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:44:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2024-12-02 15:44:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484294806] [2024-12-02 15:44:53,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:44:53,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 15:44:53,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:53,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 15:44:53,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:44:53,113 INFO L87 Difference]: Start difference. First operand 1217 states and 1286 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:53,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:53,864 INFO L93 Difference]: Finished difference Result 1648 states and 1763 transitions. [2024-12-02 15:44:53,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 15:44:53,865 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2024-12-02 15:45:30,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 15:45:30,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:30,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 15:45:30,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2729, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 15:45:30,774 INFO L87 Difference]: Start difference. First operand 1695 states and 1781 transitions. Second operand has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 54 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:32,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:32,471 INFO L93 Difference]: Finished difference Result 1728 states and 1813 transitions. [2024-12-02 15:45:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:45:32,472 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 54 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-12-02 15:45:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:32,473 INFO L225 Difference]: With dead ends: 1728 [2024-12-02 15:45:32,474 INFO L226 Difference]: Without dead ends: 1682 [2024-12-02 15:45:32,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=215, Invalid=4755, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:45:32,474 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 146 mSDsluCounter, 3820 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:32,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 3926 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:45:32,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2024-12-02 15:45:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1682. [2024-12-02 15:45:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1681 states have (on average 1.05116002379536) internal successors, (1767), 1681 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1767 transitions. [2024-12-02 15:45:33,015 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1767 transitions. Word has length 74 [2024-12-02 15:45:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:33,015 INFO L471 AbstractCegarLoop]: Abstraction has 1682 states and 1767 transitions. [2024-12-02 15:45:33,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1481481481481484) internal successors, (116), 54 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1767 transitions. [2024-12-02 15:45:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 15:45:33,016 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:33,016 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:33,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-12-02 15:45:33,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2024-12-02 15:45:33,217 INFO L396 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:33,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:33,217 INFO L85 PathProgramCache]: Analyzing trace with hash -298372623, now seen corresponding path program 98 times [2024-12-02 15:45:33,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:33,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190516556] [2024-12-02 15:45:33,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:45:33,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:33,228 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:45:33,228 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:45:33,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:33,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190516556] [2024-12-02 15:45:33,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190516556] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:33,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098037414] [2024-12-02 15:45:33,848 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:45:33,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:33,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:33,850 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:33,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-12-02 15:45:33,953 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:45:33,953 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:33,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-02 15:45:33,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:45:34,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:45:34,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098037414] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:34,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:34,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 56 [2024-12-02 15:45:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600541854] [2024-12-02 15:45:34,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:34,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 15:45:34,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:34,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 15:45:34,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2947, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 15:45:34,776 INFO L87 Difference]: Start difference. First operand 1682 states and 1767 transitions. Second operand has 56 states, 56 states have (on average 2.107142857142857) internal successors, (118), 56 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:36,673 INFO L93 Difference]: Finished difference Result 1824 states and 1917 transitions. [2024-12-02 15:45:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:45:36,674 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.107142857142857) internal successors, (118), 56 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-12-02 15:45:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:36,675 INFO L225 Difference]: With dead ends: 1824 [2024-12-02 15:45:36,676 INFO L226 Difference]: Without dead ends: 1814 [2024-12-02 15:45:36,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=216, Invalid=5186, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 15:45:36,676 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 183 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:36,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 4299 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:45:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2024-12-02 15:45:37,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1695. [2024-12-02 15:45:37,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.051357733175915) internal successors, (1781), 1694 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 1781 transitions. [2024-12-02 15:45:37,248 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 1781 transitions. Word has length 74 [2024-12-02 15:45:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:37,248 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 1781 transitions. [2024-12-02 15:45:37,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.107142857142857) internal successors, (118), 56 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:37,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 1781 transitions. [2024-12-02 15:45:37,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 15:45:37,249 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:37,250 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:37,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2024-12-02 15:45:37,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:37,450 INFO L396 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:37,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2142775413, now seen corresponding path program 99 times [2024-12-02 15:45:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:37,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351834145] [2024-12-02 15:45:37,450 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:45:37,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:37,464 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 15:45:37,464 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:45:37,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:37,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351834145] [2024-12-02 15:45:37,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351834145] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:37,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849574064] [2024-12-02 15:45:37,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:45:37,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:37,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:37,617 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:37,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-12-02 15:45:37,736 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 15:45:37,736 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:37,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:45:37,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:45:37,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:45:38,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849574064] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:38,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:38,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-12-02 15:45:38,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375255354] [2024-12-02 15:45:38,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:38,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 15:45:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:38,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 15:45:38,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:45:38,020 INFO L87 Difference]: Start difference. First operand 1695 states and 1781 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:39,058 INFO L93 Difference]: Finished difference Result 1764 states and 1850 transitions. [2024-12-02 15:45:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:45:39,058 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-02 15:45:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:39,060 INFO L225 Difference]: With dead ends: 1764 [2024-12-02 15:45:39,060 INFO L226 Difference]: Without dead ends: 1758 [2024-12-02 15:45:39,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 129 SyntacticMatches, 14 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=769, Invalid=1487, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 15:45:39,061 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 166 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:39,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 395 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2024-12-02 15:45:39,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1651. [2024-12-02 15:45:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.0503030303030303) internal successors, (1733), 1650 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 1733 transitions. [2024-12-02 15:45:39,606 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 1733 transitions. Word has length 76 [2024-12-02 15:45:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:39,606 INFO L471 AbstractCegarLoop]: Abstraction has 1651 states and 1733 transitions. [2024-12-02 15:45:39,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 1733 transitions. [2024-12-02 15:45:39,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 15:45:39,607 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:39,607 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:39,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-12-02 15:45:39,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:39,808 INFO L396 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:39,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:39,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1442498123, now seen corresponding path program 100 times [2024-12-02 15:45:39,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:39,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437352276] [2024-12-02 15:45:39,808 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:45:39,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:39,818 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:45:39,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:45:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437352276] [2024-12-02 15:45:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437352276] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250615166] [2024-12-02 15:45:39,968 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:45:39,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:39,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:39,970 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:39,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-12-02 15:45:40,083 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:45:40,083 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:40,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:45:40,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:45:40,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:45:40,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250615166] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:40,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:40,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2024-12-02 15:45:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743154637] [2024-12-02 15:45:40,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:40,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 15:45:40,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:40,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 15:45:40,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=353, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:45:40,315 INFO L87 Difference]: Start difference. First operand 1651 states and 1733 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:41,268 INFO L93 Difference]: Finished difference Result 1962 states and 2069 transitions. [2024-12-02 15:45:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:45:41,268 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-02 15:45:41,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:41,270 INFO L225 Difference]: With dead ends: 1962 [2024-12-02 15:45:41,270 INFO L226 Difference]: Without dead ends: 1688 [2024-12-02 15:45:41,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 130 SyntacticMatches, 15 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=720, Invalid=1350, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 15:45:41,271 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 128 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:41,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 404 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:41,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2024-12-02 15:45:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1675. [2024-12-02 15:45:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 1.0495818399044206) internal successors, (1757), 1674 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 1757 transitions. [2024-12-02 15:45:41,815 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 1757 transitions. Word has length 76 [2024-12-02 15:45:41,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:41,815 INFO L471 AbstractCegarLoop]: Abstraction has 1675 states and 1757 transitions. [2024-12-02 15:45:41,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 1757 transitions. [2024-12-02 15:45:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 15:45:41,816 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:41,816 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:41,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-12-02 15:45:42,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:42,017 INFO L396 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:42,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2098146581, now seen corresponding path program 101 times [2024-12-02 15:45:42,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:42,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356822105] [2024-12-02 15:45:42,017 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:45:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:42,032 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-12-02 15:45:42,032 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:42,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:42,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356822105] [2024-12-02 15:45:42,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356822105] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:42,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987985483] [2024-12-02 15:45:42,508 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:45:42,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:42,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:42,510 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:42,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-12-02 15:45:42,624 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-12-02 15:45:42,624 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:42,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 15:45:42,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:43,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 25 proven. 288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987985483] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:44,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 68 [2024-12-02 15:45:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818317433] [2024-12-02 15:45:44,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:44,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 15:45:44,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:44,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 15:45:44,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=4358, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:45:44,664 INFO L87 Difference]: Start difference. First operand 1675 states and 1757 transitions. Second operand has 68 states, 68 states have (on average 2.3970588235294117) internal successors, (163), 68 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:48,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:48,247 INFO L93 Difference]: Finished difference Result 2055 states and 2152 transitions. [2024-12-02 15:45:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:45:48,248 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.3970588235294117) internal successors, (163), 68 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-02 15:45:48,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:48,250 INFO L225 Difference]: With dead ends: 2055 [2024-12-02 15:45:48,250 INFO L226 Difference]: Without dead ends: 2014 [2024-12-02 15:45:48,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 99 SyntacticMatches, 14 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2408 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=595, Invalid=9911, Unknown=0, NotChecked=0, Total=10506 [2024-12-02 15:45:48,251 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 2984 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:48,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1244 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2984 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 15:45:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2024-12-02 15:45:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1826. [2024-12-02 15:45:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 1.0493150684931507) internal successors, (1915), 1825 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 1915 transitions. [2024-12-02 15:45:48,823 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 1915 transitions. Word has length 76 [2024-12-02 15:45:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:48,823 INFO L471 AbstractCegarLoop]: Abstraction has 1826 states and 1915 transitions. [2024-12-02 15:45:48,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.3970588235294117) internal successors, (163), 68 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:48,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 1915 transitions. [2024-12-02 15:45:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 15:45:48,825 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:48,825 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:48,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2024-12-02 15:45:49,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:49,025 INFO L396 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:49,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:49,025 INFO L85 PathProgramCache]: Analyzing trace with hash -356191659, now seen corresponding path program 102 times [2024-12-02 15:45:49,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:49,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014734598] [2024-12-02 15:45:49,025 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:45:49,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:49,041 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-12-02 15:45:49,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 25 proven. 288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:49,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014734598] [2024-12-02 15:45:49,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014734598] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158822622] [2024-12-02 15:45:49,520 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:45:49,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:49,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:49,522 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:49,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-12-02 15:45:49,645 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-12-02 15:45:49,645 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:49,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 15:45:49,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 25 proven. 288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:50,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 25 proven. 288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:45:51,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158822622] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:51,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:51,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 69 [2024-12-02 15:45:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081809949] [2024-12-02 15:45:51,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:51,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 15:45:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:51,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 15:45:51,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=4490, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 15:45:51,702 INFO L87 Difference]: Start difference. First operand 1826 states and 1915 transitions. Second operand has 69 states, 69 states have (on average 2.449275362318841) internal successors, (169), 69 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:55,143 INFO L93 Difference]: Finished difference Result 2514 states and 2617 transitions. [2024-12-02 15:45:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 15:45:55,143 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.449275362318841) internal successors, (169), 69 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-02 15:45:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:55,145 INFO L225 Difference]: With dead ends: 2514 [2024-12-02 15:45:55,145 INFO L226 Difference]: Without dead ends: 2425 [2024-12-02 15:45:55,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 100 SyntacticMatches, 12 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1660 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1079, Invalid=9427, Unknown=0, NotChecked=0, Total=10506 [2024-12-02 15:45:55,146 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 92 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:55,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 886 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:45:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2024-12-02 15:45:55,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1840. [2024-12-02 15:45:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.0489396411092986) internal successors, (1929), 1839 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 1929 transitions. [2024-12-02 15:45:55,791 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 1929 transitions. Word has length 76 [2024-12-02 15:45:55,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:55,791 INFO L471 AbstractCegarLoop]: Abstraction has 1840 states and 1929 transitions. [2024-12-02 15:45:55,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.449275362318841) internal successors, (169), 69 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 1929 transitions. [2024-12-02 15:45:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 15:45:55,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:55,792 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:55,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2024-12-02 15:45:55,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:55,993 INFO L396 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:55,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:55,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1057615591, now seen corresponding path program 103 times [2024-12-02 15:45:55,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:55,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518722619] [2024-12-02 15:45:55,993 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:45:55,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:45:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:56,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518722619] [2024-12-02 15:45:56,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518722619] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:56,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935776142] [2024-12-02 15:45:56,341 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:45:56,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:56,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:56,342 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:56,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2024-12-02 15:45:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:56,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 15:45:56,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:45:57,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:45:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935776142] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:57,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 47 [2024-12-02 15:45:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734272753] [2024-12-02 15:45:57,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:57,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-12-02 15:45:57,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:57,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-12-02 15:45:57,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 15:45:57,188 INFO L87 Difference]: Start difference. First operand 1840 states and 1929 transitions. Second operand has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 47 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:58,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:58,528 INFO L93 Difference]: Finished difference Result 1890 states and 1982 transitions. [2024-12-02 15:45:58,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 15:45:58,528 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 47 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 15:45:58,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:58,530 INFO L225 Difference]: With dead ends: 1890 [2024-12-02 15:45:58,530 INFO L226 Difference]: Without dead ends: 1884 [2024-12-02 15:45:58,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=216, Invalid=3324, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:45:58,531 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 44 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:58,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1058 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:45:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2024-12-02 15:45:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1865. [2024-12-02 15:45:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1864 states have (on average 1.0493562231759657) internal successors, (1956), 1864 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 1956 transitions. [2024-12-02 15:45:59,199 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 1956 transitions. Word has length 78 [2024-12-02 15:45:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:59,199 INFO L471 AbstractCegarLoop]: Abstraction has 1865 states and 1956 transitions. [2024-12-02 15:45:59,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 47 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 1956 transitions. [2024-12-02 15:45:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 15:45:59,200 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:59,200 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:59,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2024-12-02 15:45:59,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:59,400 INFO L396 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:59,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:59,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1193698391, now seen corresponding path program 104 times [2024-12-02 15:45:59,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:59,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594266965] [2024-12-02 15:45:59,401 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:45:59,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:59,412 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:45:59,412 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:45:59,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:59,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594266965] [2024-12-02 15:45:59,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594266965] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:59,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301595426] [2024-12-02 15:45:59,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:45:59,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:59,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:59,863 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:59,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2024-12-02 15:45:59,977 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:45:59,977 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:45:59,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 15:45:59,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:46:00,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:46:00,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301595426] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:00,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:00,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 49 [2024-12-02 15:46:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112681607] [2024-12-02 15:46:00,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:00,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 15:46:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:00,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 15:46:00,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2216, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:46:00,731 INFO L87 Difference]: Start difference. First operand 1865 states and 1956 transitions. Second operand has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:02,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:02,021 INFO L93 Difference]: Finished difference Result 1893 states and 1983 transitions. [2024-12-02 15:46:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:46:02,022 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 15:46:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:02,024 INFO L225 Difference]: With dead ends: 1893 [2024-12-02 15:46:02,024 INFO L226 Difference]: Without dead ends: 1837 [2024-12-02 15:46:02,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=218, Invalid=3688, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 15:46:02,025 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 62 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:02,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1653 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:46:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2024-12-02 15:46:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1836. [2024-12-02 15:46:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 1.049591280653951) internal successors, (1926), 1835 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 1926 transitions. [2024-12-02 15:46:02,650 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 1926 transitions. Word has length 78 [2024-12-02 15:46:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:02,650 INFO L471 AbstractCegarLoop]: Abstraction has 1836 states and 1926 transitions. [2024-12-02 15:46:02,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 1926 transitions. [2024-12-02 15:46:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 15:46:02,651 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:02,651 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:02,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2024-12-02 15:46:02,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:02,852 INFO L396 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:02,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:02,852 INFO L85 PathProgramCache]: Analyzing trace with hash -870874567, now seen corresponding path program 105 times [2024-12-02 15:46:02,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:02,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746102697] [2024-12-02 15:46:02,852 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:46:02,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:02,868 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:46:02,869 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:46:03,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:03,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746102697] [2024-12-02 15:46:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746102697] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:03,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905361581] [2024-12-02 15:46:03,319 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:46:03,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:03,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:03,321 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:03,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2024-12-02 15:46:03,437 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:46:03,437 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:03,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-02 15:46:03,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:46:04,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:46:04,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905361581] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:04,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:04,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 51 [2024-12-02 15:46:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525821024] [2024-12-02 15:46:04,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:04,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 15:46:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:04,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 15:46:04,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2413, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 15:46:04,225 INFO L87 Difference]: Start difference. First operand 1836 states and 1926 transitions. Second operand has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 51 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:05,636 INFO L93 Difference]: Finished difference Result 1865 states and 1954 transitions. [2024-12-02 15:46:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:46:05,637 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 51 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 15:46:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:05,638 INFO L225 Difference]: With dead ends: 1865 [2024-12-02 15:46:05,639 INFO L226 Difference]: Without dead ends: 1811 [2024-12-02 15:46:05,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=220, Invalid=4070, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 15:46:05,639 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 86 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:05,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 2335 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:46:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2024-12-02 15:46:06,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1811. [2024-12-02 15:46:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 1.0497237569060773) internal successors, (1900), 1810 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 1900 transitions. [2024-12-02 15:46:06,280 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 1900 transitions. Word has length 78 [2024-12-02 15:46:06,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:06,280 INFO L471 AbstractCegarLoop]: Abstraction has 1811 states and 1900 transitions. [2024-12-02 15:46:06,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 51 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:06,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 1900 transitions. [2024-12-02 15:46:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 15:46:06,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:06,281 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:06,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2024-12-02 15:46:06,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:06,482 INFO L396 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:06,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:06,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1933100233, now seen corresponding path program 106 times [2024-12-02 15:46:06,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:06,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672284842] [2024-12-02 15:46:06,482 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:46:06,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:06,493 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:46:06,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:46:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672284842] [2024-12-02 15:46:07,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672284842] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165547750] [2024-12-02 15:46:07,072 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:46:07,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:07,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:07,074 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:07,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2024-12-02 15:46:07,198 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:46:07,198 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:07,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 15:46:07,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:07,898 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:46:07,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:46:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165547750] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:07,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 52 [2024-12-02 15:46:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993747347] [2024-12-02 15:46:07,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:07,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 15:46:07,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:07,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 15:46:07,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2519, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 15:46:07,999 INFO L87 Difference]: Start difference. First operand 1811 states and 1900 transitions. Second operand has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:09,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:09,598 INFO L93 Difference]: Finished difference Result 1842 states and 1930 transitions. [2024-12-02 15:46:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:46:09,599 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 15:46:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:09,601 INFO L225 Difference]: With dead ends: 1842 [2024-12-02 15:46:09,601 INFO L226 Difference]: Without dead ends: 1790 [2024-12-02 15:46:09,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=217, Invalid=4339, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:46:09,601 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 113 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:09,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2767 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:46:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2024-12-02 15:46:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1790. [2024-12-02 15:46:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1789 states have (on average 1.0497484628283957) internal successors, (1878), 1789 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 1878 transitions. [2024-12-02 15:46:10,228 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 1878 transitions. Word has length 78 [2024-12-02 15:46:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:10,228 INFO L471 AbstractCegarLoop]: Abstraction has 1790 states and 1878 transitions. [2024-12-02 15:46:10,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 1878 transitions. [2024-12-02 15:46:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 15:46:10,229 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:10,229 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:10,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2024-12-02 15:46:10,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:10,430 INFO L396 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:10,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash -729390247, now seen corresponding path program 107 times [2024-12-02 15:46:10,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:10,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352602939] [2024-12-02 15:46:10,430 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:46:10,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:10,451 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:46:10,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:46:10,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352602939] [2024-12-02 15:46:10,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352602939] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464656087] [2024-12-02 15:46:10,958 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:46:10,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:10,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:10,960 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:10,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2024-12-02 15:46:11,077 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:46:11,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:11,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 15:46:11,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:46:11,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:46:11,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464656087] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:11,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:11,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 54 [2024-12-02 15:46:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87961066] [2024-12-02 15:46:11,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:11,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 15:46:11,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:11,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 15:46:11,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2728, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 15:46:11,924 INFO L87 Difference]: Start difference. First operand 1790 states and 1878 transitions. Second operand has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 54 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:13,488 INFO L93 Difference]: Finished difference Result 1823 states and 1910 transitions. [2024-12-02 15:46:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:46:13,488 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 54 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 15:46:13,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:13,490 INFO L225 Difference]: With dead ends: 1823 [2024-12-02 15:46:13,490 INFO L226 Difference]: Without dead ends: 1773 [2024-12-02 15:46:13,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=219, Invalid=4751, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:46:13,491 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 137 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:13,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 3349 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:46:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2024-12-02 15:46:14,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1773. [2024-12-02 15:46:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 1.0496613995485327) internal successors, (1860), 1772 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 1860 transitions. [2024-12-02 15:46:14,116 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 1860 transitions. Word has length 78 [2024-12-02 15:46:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:14,116 INFO L471 AbstractCegarLoop]: Abstraction has 1773 states and 1860 transitions. [2024-12-02 15:46:14,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 54 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 1860 transitions. [2024-12-02 15:46:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 15:46:14,117 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:14,117 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:14,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2024-12-02 15:46:14,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:14,318 INFO L396 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:14,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1409900009, now seen corresponding path program 108 times [2024-12-02 15:46:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:14,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450222474] [2024-12-02 15:46:14,318 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:46:14,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:14,336 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 15:46:14,337 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:46:14,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:14,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450222474] [2024-12-02 15:46:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450222474] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:14,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043077400] [2024-12-02 15:46:14,998 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:46:14,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:14,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:15,000 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:15,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2024-12-02 15:46:15,125 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 15:46:15,125 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:15,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-02 15:46:15,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:46:15,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:46:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043077400] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:15,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:15,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 57 [2024-12-02 15:46:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544291792] [2024-12-02 15:46:15,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:15,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 15:46:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:15,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 15:46:15,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=3052, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 15:46:15,972 INFO L87 Difference]: Start difference. First operand 1773 states and 1860 transitions. Second operand has 57 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 57 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:17,826 INFO L93 Difference]: Finished difference Result 1808 states and 1894 transitions. [2024-12-02 15:46:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:46:17,826 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 57 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 15:46:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:17,829 INFO L225 Difference]: With dead ends: 1808 [2024-12-02 15:46:17,829 INFO L226 Difference]: Without dead ends: 1760 [2024-12-02 15:46:17,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=226, Invalid=5324, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 15:46:17,831 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 158 mSDsluCounter, 4301 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:17,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 4415 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:46:17,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2024-12-02 15:46:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1760. [2024-12-02 15:46:18,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 1.0494599204093236) internal successors, (1846), 1759 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 1846 transitions. [2024-12-02 15:46:18,452 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 1846 transitions. Word has length 78 [2024-12-02 15:46:18,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:18,452 INFO L471 AbstractCegarLoop]: Abstraction has 1760 states and 1846 transitions. [2024-12-02 15:46:18,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 57 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:18,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 1846 transitions. [2024-12-02 15:46:18,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 15:46:18,453 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:18,453 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:18,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2024-12-02 15:46:18,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2024-12-02 15:46:18,654 INFO L396 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:18,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash 596292729, now seen corresponding path program 109 times [2024-12-02 15:46:18,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:18,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966861043] [2024-12-02 15:46:18,654 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:46:18,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:46:19,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:19,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966861043] [2024-12-02 15:46:19,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966861043] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:19,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087597203] [2024-12-02 15:46:19,329 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:46:19,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:19,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:19,331 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:19,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2024-12-02 15:46:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:19,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-12-02 15:46:19,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:46:20,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:46:20,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087597203] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:20,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:20,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 59 [2024-12-02 15:46:20,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841236651] [2024-12-02 15:46:20,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:20,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-12-02 15:46:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:20,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-12-02 15:46:20,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=3281, Unknown=0, NotChecked=0, Total=3422 [2024-12-02 15:46:20,362 INFO L87 Difference]: Start difference. First operand 1760 states and 1846 transitions. Second operand has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:22,468 INFO L93 Difference]: Finished difference Result 1906 states and 2000 transitions. [2024-12-02 15:46:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:46:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 15:46:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:22,470 INFO L225 Difference]: With dead ends: 1906 [2024-12-02 15:46:22,470 INFO L226 Difference]: Without dead ends: 1896 [2024-12-02 15:46:22,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=228, Invalid=5778, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 15:46:22,471 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 195 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 5157 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:22,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 5157 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:46:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2024-12-02 15:46:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1773. [2024-12-02 15:46:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 1.0496613995485327) internal successors, (1860), 1772 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 1860 transitions. [2024-12-02 15:46:23,144 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 1860 transitions. Word has length 78 [2024-12-02 15:46:23,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:23,144 INFO L471 AbstractCegarLoop]: Abstraction has 1773 states and 1860 transitions. [2024-12-02 15:46:23,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:23,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 1860 transitions. [2024-12-02 15:46:23,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 15:46:23,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:23,145 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:23,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2024-12-02 15:46:23,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2024-12-02 15:46:23,346 INFO L396 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:23,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash -552689795, now seen corresponding path program 110 times [2024-12-02 15:46:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:23,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059095060] [2024-12-02 15:46:23,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:46:23,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:23,356 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:46:23,356 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:46:23,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:23,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059095060] [2024-12-02 15:46:23,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059095060] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:23,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52770762] [2024-12-02 15:46:23,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:46:23,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:23,522 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:23,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2024-12-02 15:46:23,646 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:46:23,646 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:23,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 15:46:23,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:46:23,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:46:23,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52770762] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:23,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:23,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2024-12-02 15:46:23,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942672123] [2024-12-02 15:46:23,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:23,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 15:46:23,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:23,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 15:46:23,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2024-12-02 15:46:23,941 INFO L87 Difference]: Start difference. First operand 1773 states and 1860 transitions. Second operand has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:25,163 INFO L93 Difference]: Finished difference Result 2332 states and 2473 transitions. [2024-12-02 15:46:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 15:46:25,164 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 15:46:25,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:25,166 INFO L225 Difference]: With dead ends: 2332 [2024-12-02 15:46:25,166 INFO L226 Difference]: Without dead ends: 2011 [2024-12-02 15:46:25,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 14 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:46:25,167 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 80 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:25,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 230 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:46:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2024-12-02 15:46:25,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2010. [2024-12-02 15:46:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2009 states have (on average 1.0507715281234444) internal successors, (2111), 2009 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2111 transitions. [2024-12-02 15:46:25,866 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2111 transitions. Word has length 80 [2024-12-02 15:46:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:25,866 INFO L471 AbstractCegarLoop]: Abstraction has 2010 states and 2111 transitions. [2024-12-02 15:46:25,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2111 transitions. [2024-12-02 15:46:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 15:46:25,868 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:25,868 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:25,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2024-12-02 15:46:26,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:26,068 INFO L396 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:26,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1436786499, now seen corresponding path program 111 times [2024-12-02 15:46:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:26,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636852397] [2024-12-02 15:46:26,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:46:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:26,084 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:46:26,084 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:46:26,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:26,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636852397] [2024-12-02 15:46:26,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636852397] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:26,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698553298] [2024-12-02 15:46:26,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:46:26,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:26,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:26,219 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:26,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-12-02 15:46:26,348 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:46:26,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:26,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 15:46:26,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:46:26,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:46:26,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698553298] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:26,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:26,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2024-12-02 15:46:26,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304967566] [2024-12-02 15:46:26,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:26,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 15:46:26,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:26,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 15:46:26,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2024-12-02 15:46:26,632 INFO L87 Difference]: Start difference. First operand 2010 states and 2111 transitions. Second operand has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:27,971 INFO L93 Difference]: Finished difference Result 2182 states and 2299 transitions. [2024-12-02 15:46:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 15:46:27,972 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 15:46:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:27,974 INFO L225 Difference]: With dead ends: 2182 [2024-12-02 15:46:27,974 INFO L226 Difference]: Without dead ends: 2155 [2024-12-02 15:46:27,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 14 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:46:27,975 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 65 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:27,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 323 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:46:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2024-12-02 15:46:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2093. [2024-12-02 15:46:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 2092 states have (on average 1.0554493307839388) internal successors, (2208), 2092 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2208 transitions. [2024-12-02 15:46:28,745 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2208 transitions. Word has length 80 [2024-12-02 15:46:28,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:28,745 INFO L471 AbstractCegarLoop]: Abstraction has 2093 states and 2208 transitions. [2024-12-02 15:46:28,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2208 transitions. [2024-12-02 15:46:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 15:46:28,746 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:28,746 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:28,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2024-12-02 15:46:28,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable120 [2024-12-02 15:46:28,947 INFO L396 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:28,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:28,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1105755549, now seen corresponding path program 112 times [2024-12-02 15:46:28,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:28,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138565327] [2024-12-02 15:46:28,947 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:46:28,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:28,960 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:46:28,960 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:46:29,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138565327] [2024-12-02 15:46:29,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138565327] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661380943] [2024-12-02 15:46:29,552 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:46:29,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:29,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:29,554 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:29,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2024-12-02 15:46:29,688 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:46:29,688 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:29,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 15:46:29,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:46:30,988 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 27 proven. 338 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:46:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661380943] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:32,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:32,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 73 [2024-12-02 15:46:32,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709944920] [2024-12-02 15:46:32,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:32,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-12-02 15:46:32,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:32,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-12-02 15:46:32,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=5043, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 15:46:32,108 INFO L87 Difference]: Start difference. First operand 2093 states and 2208 transitions. Second operand has 73 states, 73 states have (on average 2.3698630136986303) internal successors, (173), 73 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:36,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:36,389 INFO L93 Difference]: Finished difference Result 2539 states and 2672 transitions. [2024-12-02 15:46:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-12-02 15:46:36,389 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.3698630136986303) internal successors, (173), 73 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 15:46:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:36,392 INFO L225 Difference]: With dead ends: 2539 [2024-12-02 15:46:36,392 INFO L226 Difference]: Without dead ends: 2495 [2024-12-02 15:46:36,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 103 SyntacticMatches, 15 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2816 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=663, Invalid=11547, Unknown=0, NotChecked=0, Total=12210 [2024-12-02 15:46:36,392 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 3346 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 3371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:36,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1297 Invalid, 3371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3346 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:46:36,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2024-12-02 15:46:37,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2266. [2024-12-02 15:46:37,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2266 states, 2265 states have (on average 1.055187637969095) internal successors, (2390), 2265 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 2390 transitions. [2024-12-02 15:46:37,237 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 2390 transitions. Word has length 80 [2024-12-02 15:46:37,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:37,237 INFO L471 AbstractCegarLoop]: Abstraction has 2266 states and 2390 transitions. [2024-12-02 15:46:37,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.3698630136986303) internal successors, (173), 73 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 2390 transitions. [2024-12-02 15:46:37,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 15:46:37,238 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:37,238 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:37,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2024-12-02 15:46:37,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:37,439 INFO L396 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:37,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash 423752413, now seen corresponding path program 113 times [2024-12-02 15:46:37,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:37,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069527256] [2024-12-02 15:46:37,439 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:46:37,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:37,466 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-12-02 15:46:37,466 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 27 proven. 338 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:46:38,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:38,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069527256] [2024-12-02 15:46:38,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069527256] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:38,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771218210] [2024-12-02 15:46:38,056 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:46:38,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:38,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:38,057 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:38,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2024-12-02 15:46:38,192 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-12-02 15:46:38,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:38,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 15:46:38,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 27 proven. 338 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:46:39,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 27 proven. 338 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:46:40,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771218210] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:40,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:40,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 73 [2024-12-02 15:46:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854814919] [2024-12-02 15:46:40,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:40,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-12-02 15:46:40,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:40,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-12-02 15:46:40,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=5043, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 15:46:40,591 INFO L87 Difference]: Start difference. First operand 2266 states and 2390 transitions. Second operand has 73 states, 73 states have (on average 2.3698630136986303) internal successors, (173), 73 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:44,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:44,606 INFO L93 Difference]: Finished difference Result 3207 states and 3347 transitions. [2024-12-02 15:46:44,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-12-02 15:46:44,607 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.3698630136986303) internal successors, (173), 73 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 15:46:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:44,610 INFO L225 Difference]: With dead ends: 3207 [2024-12-02 15:46:44,610 INFO L226 Difference]: Without dead ends: 3111 [2024-12-02 15:46:44,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 104 SyntacticMatches, 14 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2382 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1235, Invalid=10755, Unknown=0, NotChecked=0, Total=11990 [2024-12-02 15:46:44,611 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 74 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:44,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 937 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:46:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2024-12-02 15:46:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 2282. [2024-12-02 15:46:45,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2281 states have (on average 1.0548005260850504) internal successors, (2406), 2281 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2406 transitions. [2024-12-02 15:46:45,440 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2406 transitions. Word has length 80 [2024-12-02 15:46:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:45,440 INFO L471 AbstractCegarLoop]: Abstraction has 2282 states and 2406 transitions. [2024-12-02 15:46:45,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.3698630136986303) internal successors, (173), 73 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2406 transitions. [2024-12-02 15:46:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 15:46:45,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:45,441 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:45,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2024-12-02 15:46:45,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2024-12-02 15:46:45,642 INFO L396 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:45,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:45,642 INFO L85 PathProgramCache]: Analyzing trace with hash -146673383, now seen corresponding path program 114 times [2024-12-02 15:46:45,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:45,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553879413] [2024-12-02 15:46:45,642 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:46:45,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:45,661 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-12-02 15:46:45,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 15:46:45,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:45,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553879413] [2024-12-02 15:46:45,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553879413] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:45,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224397399] [2024-12-02 15:46:45,939 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:46:45,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:45,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:45,940 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:45,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2024-12-02 15:46:46,058 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-12-02 15:46:46,058 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:46,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 15:46:46,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 15:46:46,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 15:46:47,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224397399] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:47,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:47,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2024-12-02 15:46:47,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500164201] [2024-12-02 15:46:47,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:47,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 15:46:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:47,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 15:46:47,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 15:46:47,028 INFO L87 Difference]: Start difference. First operand 2282 states and 2406 transitions. Second operand has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:49,170 INFO L93 Difference]: Finished difference Result 2614 states and 2751 transitions. [2024-12-02 15:46:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:46:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 15:46:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:49,173 INFO L225 Difference]: With dead ends: 2614 [2024-12-02 15:46:49,173 INFO L226 Difference]: Without dead ends: 2536 [2024-12-02 15:46:49,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 131 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=324, Invalid=3966, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 15:46:49,174 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 10 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:49,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 756 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:46:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2024-12-02 15:46:50,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2503. [2024-12-02 15:46:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2502 states have (on average 1.0495603517186252) internal successors, (2626), 2502 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 2626 transitions. [2024-12-02 15:46:50,052 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 2626 transitions. Word has length 82 [2024-12-02 15:46:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:50,053 INFO L471 AbstractCegarLoop]: Abstraction has 2503 states and 2626 transitions. [2024-12-02 15:46:50,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 2626 transitions. [2024-12-02 15:46:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 15:46:50,054 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:50,054 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:50,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2024-12-02 15:46:50,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2024-12-02 15:46:50,255 INFO L396 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:50,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1243077727, now seen corresponding path program 115 times [2024-12-02 15:46:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:50,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636972537] [2024-12-02 15:46:50,255 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:46:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:46:50,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:50,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636972537] [2024-12-02 15:46:50,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636972537] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:50,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910449750] [2024-12-02 15:46:50,680 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:46:50,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:50,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:50,681 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:50,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2024-12-02 15:46:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:50,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 15:46:50,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:46:51,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:46:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910449750] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:51,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:51,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 50 [2024-12-02 15:46:51,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134368454] [2024-12-02 15:46:51,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:51,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-12-02 15:46:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:51,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-12-02 15:46:51,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2308, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 15:46:51,643 INFO L87 Difference]: Start difference. First operand 2503 states and 2626 transitions. Second operand has 50 states, 50 states have (on average 2.16) internal successors, (108), 50 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:53,135 INFO L93 Difference]: Finished difference Result 2578 states and 2704 transitions. [2024-12-02 15:46:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:46:53,135 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.16) internal successors, (108), 50 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 15:46:53,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:53,138 INFO L225 Difference]: With dead ends: 2578 [2024-12-02 15:46:53,138 INFO L226 Difference]: Without dead ends: 2551 [2024-12-02 15:46:53,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=227, Invalid=3805, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:46:53,138 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 58 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:53,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1619 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:46:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2024-12-02 15:46:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2509. [2024-12-02 15:46:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2508 states have (on average 1.0498405103668262) internal successors, (2633), 2508 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 2633 transitions. [2024-12-02 15:46:54,009 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 2633 transitions. Word has length 82 [2024-12-02 15:46:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:54,009 INFO L471 AbstractCegarLoop]: Abstraction has 2509 states and 2633 transitions. [2024-12-02 15:46:54,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.16) internal successors, (108), 50 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 2633 transitions. [2024-12-02 15:46:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 15:46:54,011 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:54,011 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:54,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2024-12-02 15:46:54,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2024-12-02 15:46:54,211 INFO L396 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:54,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:54,211 INFO L85 PathProgramCache]: Analyzing trace with hash 224386969, now seen corresponding path program 116 times [2024-12-02 15:46:54,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:54,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787196588] [2024-12-02 15:46:54,212 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:46:54,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:54,221 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:46:54,221 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 15 proven. 99 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-12-02 15:46:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787196588] [2024-12-02 15:46:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787196588] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753166962] [2024-12-02 15:46:54,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:46:54,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:54,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:54,508 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:54,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2024-12-02 15:46:54,626 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:46:54,626 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:54,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 15:46:54,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 15:46:55,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 15:46:55,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753166962] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:55,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:55,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2024-12-02 15:46:55,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605382236] [2024-12-02 15:46:55,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:55,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 15:46:55,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:55,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 15:46:55,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 15:46:55,606 INFO L87 Difference]: Start difference. First operand 2509 states and 2633 transitions. Second operand has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:57,474 INFO L93 Difference]: Finished difference Result 2658 states and 2797 transitions. [2024-12-02 15:46:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 15:46:57,475 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 15:46:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:57,478 INFO L225 Difference]: With dead ends: 2658 [2024-12-02 15:46:57,478 INFO L226 Difference]: Without dead ends: 2478 [2024-12-02 15:46:57,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 132 SyntacticMatches, 7 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=460, Invalid=3700, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 15:46:57,478 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:57,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 615 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:46:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2024-12-02 15:46:58,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2477. [2024-12-02 15:46:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2476 states have (on average 1.0448303715670437) internal successors, (2587), 2476 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 2587 transitions. [2024-12-02 15:46:58,381 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 2587 transitions. Word has length 82 [2024-12-02 15:46:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:58,381 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 2587 transitions. [2024-12-02 15:46:58,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 2587 transitions. [2024-12-02 15:46:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 15:46:58,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:58,383 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:58,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2024-12-02 15:46:58,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2024-12-02 15:46:58,583 INFO L396 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:58,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:58,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1971681329, now seen corresponding path program 117 times [2024-12-02 15:46:58,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058669707] [2024-12-02 15:46:58,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:46:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:58,595 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-12-02 15:46:58,595 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:46:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058669707] [2024-12-02 15:46:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058669707] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465011716] [2024-12-02 15:46:59,110 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:46:59,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:59,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:59,111 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:59,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2024-12-02 15:46:59,244 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-12-02 15:46:59,244 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:46:59,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-02 15:46:59,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:46:59,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:47:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465011716] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:00,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 52 [2024-12-02 15:47:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868314697] [2024-12-02 15:47:00,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:00,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 15:47:00,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:00,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 15:47:00,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2509, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 15:47:00,004 INFO L87 Difference]: Start difference. First operand 2477 states and 2587 transitions. Second operand has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 52 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:01,740 INFO L93 Difference]: Finished difference Result 2507 states and 2616 transitions. [2024-12-02 15:47:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:47:01,740 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 52 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 15:47:01,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:01,742 INFO L225 Difference]: With dead ends: 2507 [2024-12-02 15:47:01,742 INFO L226 Difference]: Without dead ends: 2449 [2024-12-02 15:47:01,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=229, Invalid=4193, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 15:47:01,743 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 77 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:01,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 2135 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:47:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2024-12-02 15:47:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2448. [2024-12-02 15:47:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2447 states have (on average 1.044953003677973) internal successors, (2557), 2447 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 2557 transitions. [2024-12-02 15:47:02,606 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 2557 transitions. Word has length 82 [2024-12-02 15:47:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:02,606 INFO L471 AbstractCegarLoop]: Abstraction has 2448 states and 2557 transitions. [2024-12-02 15:47:02,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 52 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 2557 transitions. [2024-12-02 15:47:02,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 15:47:02,607 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:02,607 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:02,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2024-12-02 15:47:02,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:02,808 INFO L396 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:02,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -228939583, now seen corresponding path program 118 times [2024-12-02 15:47:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121909983] [2024-12-02 15:47:02,808 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:47:02,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:02,820 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:47:02,820 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:47:03,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:03,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121909983] [2024-12-02 15:47:03,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121909983] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:03,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342712436] [2024-12-02 15:47:03,308 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:47:03,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:03,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:03,310 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:03,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2024-12-02 15:47:03,422 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:47:03,422 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:03,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 15:47:03,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:47:04,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:47:04,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342712436] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:04,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:04,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 53 [2024-12-02 15:47:04,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840366901] [2024-12-02 15:47:04,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:04,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 15:47:04,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:04,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 15:47:04,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2617, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:47:04,205 INFO L87 Difference]: Start difference. First operand 2448 states and 2557 transitions. Second operand has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 53 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:05,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:05,971 INFO L93 Difference]: Finished difference Result 2479 states and 2587 transitions. [2024-12-02 15:47:05,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:47:05,972 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 53 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 15:47:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:05,974 INFO L225 Difference]: With dead ends: 2479 [2024-12-02 15:47:05,974 INFO L226 Difference]: Without dead ends: 2423 [2024-12-02 15:47:05,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=226, Invalid=4466, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 15:47:05,975 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 98 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:05,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 2871 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:47:05,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2024-12-02 15:47:06,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2423. [2024-12-02 15:47:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 1.0450041288191578) internal successors, (2531), 2422 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 2531 transitions. [2024-12-02 15:47:06,847 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 2531 transitions. Word has length 82 [2024-12-02 15:47:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:06,847 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 2531 transitions. [2024-12-02 15:47:06,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.0943396226415096) internal successors, (111), 53 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 2531 transitions. [2024-12-02 15:47:06,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 15:47:06,848 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:06,848 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:06,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2024-12-02 15:47:07,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2024-12-02 15:47:07,049 INFO L396 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:07,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash -846154415, now seen corresponding path program 119 times [2024-12-02 15:47:07,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:07,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6036419] [2024-12-02 15:47:07,049 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:47:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:07,063 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-12-02 15:47:07,064 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:47:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:07,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6036419] [2024-12-02 15:47:07,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6036419] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:07,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412712338] [2024-12-02 15:47:07,577 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:47:07,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:07,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:07,578 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:07,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2024-12-02 15:47:07,706 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-12-02 15:47:07,707 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:07,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 15:47:07,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:47:08,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:47:08,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412712338] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:08,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:08,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 55 [2024-12-02 15:47:08,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40637146] [2024-12-02 15:47:08,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:08,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 15:47:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:08,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 15:47:08,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2830, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:47:08,642 INFO L87 Difference]: Start difference. First operand 2423 states and 2531 transitions. Second operand has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:10,505 INFO L93 Difference]: Finished difference Result 2456 states and 2563 transitions. [2024-12-02 15:47:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:47:10,506 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 15:47:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:10,508 INFO L225 Difference]: With dead ends: 2456 [2024-12-02 15:47:10,508 INFO L226 Difference]: Without dead ends: 2402 [2024-12-02 15:47:10,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=228, Invalid=4884, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 15:47:10,509 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 122 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:10,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 3151 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:47:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2024-12-02 15:47:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2402. [2024-12-02 15:47:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2401 states have (on average 1.0449812578092461) internal successors, (2509), 2401 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 2509 transitions. [2024-12-02 15:47:11,363 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 2509 transitions. Word has length 82 [2024-12-02 15:47:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:11,363 INFO L471 AbstractCegarLoop]: Abstraction has 2402 states and 2509 transitions. [2024-12-02 15:47:11,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 2509 transitions. [2024-12-02 15:47:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 15:47:11,365 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:11,365 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:11,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2024-12-02 15:47:11,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2024-12-02 15:47:11,565 INFO L396 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:11,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash 772840929, now seen corresponding path program 120 times [2024-12-02 15:47:11,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:11,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360581176] [2024-12-02 15:47:11,566 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:47:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:11,581 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-12-02 15:47:11,581 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:47:12,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:12,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360581176] [2024-12-02 15:47:12,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360581176] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:12,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746783570] [2024-12-02 15:47:12,220 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:47:12,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:12,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:12,221 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:12,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2024-12-02 15:47:12,358 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-12-02 15:47:12,358 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:12,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-02 15:47:12,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:47:13,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:47:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746783570] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:13,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 58 [2024-12-02 15:47:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903911818] [2024-12-02 15:47:13,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:13,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 15:47:13,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:13,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 15:47:13,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=3160, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 15:47:13,285 INFO L87 Difference]: Start difference. First operand 2402 states and 2509 transitions. Second operand has 58 states, 58 states have (on average 2.1379310344827585) internal successors, (124), 58 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:15,400 INFO L93 Difference]: Finished difference Result 2437 states and 2543 transitions. [2024-12-02 15:47:15,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:47:15,400 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.1379310344827585) internal successors, (124), 58 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 15:47:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:15,403 INFO L225 Difference]: With dead ends: 2437 [2024-12-02 15:47:15,403 INFO L226 Difference]: Without dead ends: 2385 [2024-12-02 15:47:15,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=235, Invalid=5465, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 15:47:15,403 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 146 mSDsluCounter, 4158 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 4266 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:15,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 4266 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:47:15,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2024-12-02 15:47:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2385. [2024-12-02 15:47:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 2384 states have (on average 1.0448825503355705) internal successors, (2491), 2384 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 2491 transitions. [2024-12-02 15:47:16,247 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 2491 transitions. Word has length 82 [2024-12-02 15:47:16,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:16,247 INFO L471 AbstractCegarLoop]: Abstraction has 2385 states and 2491 transitions. [2024-12-02 15:47:16,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.1379310344827585) internal successors, (124), 58 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 2491 transitions. [2024-12-02 15:47:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 15:47:16,249 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:16,249 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:16,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2024-12-02 15:47:16,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:16,449 INFO L396 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:16,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:16,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1350787697, now seen corresponding path program 121 times [2024-12-02 15:47:16,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:16,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531516977] [2024-12-02 15:47:16,450 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:47:16,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:47:17,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:17,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531516977] [2024-12-02 15:47:17,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531516977] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:17,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257033672] [2024-12-02 15:47:17,133 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:47:17,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:17,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:17,135 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:17,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2024-12-02 15:47:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:17,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-12-02 15:47:17,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:47:17,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:47:18,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257033672] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:18,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 60 [2024-12-02 15:47:18,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771644698] [2024-12-02 15:47:18,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:18,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 15:47:18,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:18,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 15:47:18,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3393, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:47:18,131 INFO L87 Difference]: Start difference. First operand 2385 states and 2491 transitions. Second operand has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:20,259 INFO L93 Difference]: Finished difference Result 2422 states and 2527 transitions. [2024-12-02 15:47:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:47:20,259 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 15:47:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:20,262 INFO L225 Difference]: With dead ends: 2422 [2024-12-02 15:47:20,262 INFO L226 Difference]: Without dead ends: 2372 [2024-12-02 15:47:20,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=237, Invalid=5925, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 15:47:20,262 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 170 mSDsluCounter, 4834 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:20,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 4956 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:47:20,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2024-12-02 15:47:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2372. [2024-12-02 15:47:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2371 states have (on average 1.0447068747363981) internal successors, (2477), 2371 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 2477 transitions. [2024-12-02 15:47:21,109 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 2477 transitions. Word has length 82 [2024-12-02 15:47:21,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:21,109 INFO L471 AbstractCegarLoop]: Abstraction has 2372 states and 2477 transitions. [2024-12-02 15:47:21,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:21,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 2477 transitions. [2024-12-02 15:47:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 15:47:21,111 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:21,111 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:21,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2024-12-02 15:47:21,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:21,311 INFO L396 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:21,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash 391250689, now seen corresponding path program 122 times [2024-12-02 15:47:21,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:21,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385730076] [2024-12-02 15:47:21,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:47:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:21,324 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:47:21,324 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 394 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:47:21,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:21,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385730076] [2024-12-02 15:47:21,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385730076] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:21,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744592767] [2024-12-02 15:47:21,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:47:21,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:21,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:21,989 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:21,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2024-12-02 15:47:22,115 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:47:22,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:22,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-12-02 15:47:22,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 394 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:47:22,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 394 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:47:23,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744592767] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:23,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:23,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 62 [2024-12-02 15:47:23,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81372471] [2024-12-02 15:47:23,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:23,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-12-02 15:47:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:23,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-12-02 15:47:23,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=3634, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 15:47:23,054 INFO L87 Difference]: Start difference. First operand 2372 states and 2477 transitions. Second operand has 62 states, 62 states have (on average 2.096774193548387) internal successors, (130), 62 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:25,474 INFO L93 Difference]: Finished difference Result 2541 states and 2655 transitions. [2024-12-02 15:47:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 15:47:25,475 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.096774193548387) internal successors, (130), 62 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 15:47:25,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:25,477 INFO L225 Difference]: With dead ends: 2541 [2024-12-02 15:47:25,477 INFO L226 Difference]: Without dead ends: 2531 [2024-12-02 15:47:25,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=239, Invalid=6403, Unknown=0, NotChecked=0, Total=6642 [2024-12-02 15:47:25,478 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 213 mSDsluCounter, 5706 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 5840 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:25,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 5840 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3303 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:47:25,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2024-12-02 15:47:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2385. [2024-12-02 15:47:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 2384 states have (on average 1.0448825503355705) internal successors, (2491), 2384 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:26,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 2491 transitions. [2024-12-02 15:47:26,337 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 2491 transitions. Word has length 82 [2024-12-02 15:47:26,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:26,337 INFO L471 AbstractCegarLoop]: Abstraction has 2385 states and 2491 transitions. [2024-12-02 15:47:26,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.096774193548387) internal successors, (130), 62 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 2491 transitions. [2024-12-02 15:47:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 15:47:26,338 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:26,338 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:26,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2024-12-02 15:47:26,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:26,539 INFO L396 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:26,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash -736659723, now seen corresponding path program 123 times [2024-12-02 15:47:26,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:26,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480155618] [2024-12-02 15:47:26,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:47:26,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:26,555 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:47:26,555 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:47:26,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:26,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480155618] [2024-12-02 15:47:26,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480155618] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:26,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102766706] [2024-12-02 15:47:26,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:47:26,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:26,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:26,721 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:26,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2024-12-02 15:47:26,842 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:47:26,842 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:26,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 15:47:26,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:47:26,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:47:27,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102766706] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:27,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:27,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-12-02 15:47:27,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450884449] [2024-12-02 15:47:27,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:27,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 15:47:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:27,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 15:47:27,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=531, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:47:27,130 INFO L87 Difference]: Start difference. First operand 2385 states and 2491 transitions. Second operand has 29 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:28,516 INFO L93 Difference]: Finished difference Result 2471 states and 2577 transitions. [2024-12-02 15:47:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 15:47:28,516 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-12-02 15:47:28,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:28,519 INFO L225 Difference]: With dead ends: 2471 [2024-12-02 15:47:28,519 INFO L226 Difference]: Without dead ends: 2465 [2024-12-02 15:47:28,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 142 SyntacticMatches, 16 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1121, Invalid=2185, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 15:47:28,520 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 176 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:28,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 346 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:47:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2024-12-02 15:47:29,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2337. [2024-12-02 15:47:29,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 2336 states have (on average 1.0440924657534247) internal successors, (2439), 2336 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 2439 transitions. [2024-12-02 15:47:29,363 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 2439 transitions. Word has length 84 [2024-12-02 15:47:29,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:29,363 INFO L471 AbstractCegarLoop]: Abstraction has 2337 states and 2439 transitions. [2024-12-02 15:47:29,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 2439 transitions. [2024-12-02 15:47:29,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 15:47:29,364 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:29,364 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:29,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2024-12-02 15:47:29,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:29,565 INFO L396 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:29,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:29,565 INFO L85 PathProgramCache]: Analyzing trace with hash -435865035, now seen corresponding path program 124 times [2024-12-02 15:47:29,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:29,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551021212] [2024-12-02 15:47:29,565 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:47:29,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:29,576 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:47:29,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:47:29,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551021212] [2024-12-02 15:47:29,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551021212] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130608693] [2024-12-02 15:47:29,732 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:47:29,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:29,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:29,734 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:29,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2024-12-02 15:47:29,854 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:47:29,855 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:29,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 15:47:29,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:47:29,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:47:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130608693] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:30,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:30,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2024-12-02 15:47:30,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760660995] [2024-12-02 15:47:30,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:30,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 15:47:30,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:30,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 15:47:30,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=451, Unknown=0, NotChecked=0, Total=702 [2024-12-02 15:47:30,116 INFO L87 Difference]: Start difference. First operand 2337 states and 2439 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:31,407 INFO L93 Difference]: Finished difference Result 2726 states and 2857 transitions. [2024-12-02 15:47:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 15:47:31,407 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-12-02 15:47:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:31,410 INFO L225 Difference]: With dead ends: 2726 [2024-12-02 15:47:31,410 INFO L226 Difference]: Without dead ends: 2380 [2024-12-02 15:47:31,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 143 SyntacticMatches, 17 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1062, Invalid=2018, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 15:47:31,411 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 173 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:31,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 390 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:47:31,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2024-12-02 15:47:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2365. [2024-12-02 15:47:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2364 states have (on average 1.043570219966159) internal successors, (2467), 2364 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 2467 transitions. [2024-12-02 15:47:32,259 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 2467 transitions. Word has length 84 [2024-12-02 15:47:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:32,259 INFO L471 AbstractCegarLoop]: Abstraction has 2365 states and 2467 transitions. [2024-12-02 15:47:32,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 2467 transitions. [2024-12-02 15:47:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 15:47:32,260 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:32,260 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:32,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2024-12-02 15:47:32,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:32,461 INFO L396 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:32,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash -778135003, now seen corresponding path program 125 times [2024-12-02 15:47:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:32,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922842779] [2024-12-02 15:47:32,461 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:47:32,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:32,488 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-12-02 15:47:32,488 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:47:33,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:33,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922842779] [2024-12-02 15:47:33,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922842779] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:33,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822439817] [2024-12-02 15:47:33,078 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:47:33,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:33,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:33,080 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:33,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2024-12-02 15:47:33,200 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-12-02 15:47:33,200 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:33,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 15:47:33,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:47:34,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 29 proven. 392 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:47:35,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822439817] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:35,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:35,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 78 [2024-12-02 15:47:35,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20692351] [2024-12-02 15:47:35,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:35,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-12-02 15:47:35,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:35,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-12-02 15:47:35,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=5778, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 15:47:35,672 INFO L87 Difference]: Start difference. First operand 2365 states and 2467 transitions. Second operand has 78 states, 78 states have (on average 2.3461538461538463) internal successors, (183), 78 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:40,519 INFO L93 Difference]: Finished difference Result 2848 states and 2967 transitions. [2024-12-02 15:47:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 15:47:40,519 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.3461538461538463) internal successors, (183), 78 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-12-02 15:47:40,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:40,522 INFO L225 Difference]: With dead ends: 2848 [2024-12-02 15:47:40,522 INFO L226 Difference]: Without dead ends: 2802 [2024-12-02 15:47:40,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 107 SyntacticMatches, 16 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3256 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=734, Invalid=13308, Unknown=0, NotChecked=0, Total=14042 [2024-12-02 15:47:40,523 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 3941 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 3968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:40,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1454 Invalid, 3968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3941 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 15:47:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2024-12-02 15:47:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2557. [2024-12-02 15:47:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2556 states have (on average 1.0434272300469483) internal successors, (2667), 2556 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 2667 transitions. [2024-12-02 15:47:41,452 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 2667 transitions. Word has length 84 [2024-12-02 15:47:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:41,452 INFO L471 AbstractCegarLoop]: Abstraction has 2557 states and 2667 transitions. [2024-12-02 15:47:41,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.3461538461538463) internal successors, (183), 78 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 2667 transitions. [2024-12-02 15:47:41,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 15:47:41,453 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:41,453 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:41,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2024-12-02 15:47:41,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:41,654 INFO L396 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:41,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash 946847589, now seen corresponding path program 126 times [2024-12-02 15:47:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011751060] [2024-12-02 15:47:41,654 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:47:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:41,672 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-12-02 15:47:41,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 29 proven. 392 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:47:42,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:42,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011751060] [2024-12-02 15:47:42,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011751060] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:42,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677111059] [2024-12-02 15:47:42,337 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:47:42,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:42,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:42,338 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:42,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2024-12-02 15:47:42,479 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-12-02 15:47:42,479 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:42,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 15:47:42,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 29 proven. 392 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:47:44,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 29 proven. 392 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:47:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677111059] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:45,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:45,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 79 [2024-12-02 15:47:45,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777227873] [2024-12-02 15:47:45,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:45,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-12-02 15:47:45,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:45,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-12-02 15:47:45,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=5943, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 15:47:45,272 INFO L87 Difference]: Start difference. First operand 2557 states and 2667 transitions. Second operand has 79 states, 79 states have (on average 2.392405063291139) internal successors, (189), 79 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:50,493 INFO L93 Difference]: Finished difference Result 3598 states and 3724 transitions. [2024-12-02 15:47:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 15:47:50,494 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.392405063291139) internal successors, (189), 79 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-12-02 15:47:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:50,497 INFO L225 Difference]: With dead ends: 3598 [2024-12-02 15:47:50,497 INFO L226 Difference]: Without dead ends: 3498 [2024-12-02 15:47:50,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 108 SyntacticMatches, 14 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1581 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1397, Invalid=12645, Unknown=0, NotChecked=0, Total=14042 [2024-12-02 15:47:50,498 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 123 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:50,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1105 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:47:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2024-12-02 15:47:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2573. [2024-12-02 15:47:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2572 states have (on average 1.0431570762052877) internal successors, (2683), 2572 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 2683 transitions. [2024-12-02 15:47:51,468 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 2683 transitions. Word has length 84 [2024-12-02 15:47:51,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:51,468 INFO L471 AbstractCegarLoop]: Abstraction has 2573 states and 2683 transitions. [2024-12-02 15:47:51,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.392405063291139) internal successors, (189), 79 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 2683 transitions. [2024-12-02 15:47:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 15:47:51,470 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:51,470 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:51,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2024-12-02 15:47:51,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2024-12-02 15:47:51,670 INFO L396 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:51,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:51,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2059124633, now seen corresponding path program 127 times [2024-12-02 15:47:51,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:51,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017037018] [2024-12-02 15:47:51,671 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:47:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:47:52,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:52,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017037018] [2024-12-02 15:47:52,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017037018] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:52,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649720074] [2024-12-02 15:47:52,072 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:47:52,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:52,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:52,074 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:52,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2024-12-02 15:47:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:52,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 15:47:52,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:47:52,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:47:53,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649720074] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:53,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:53,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 51 [2024-12-02 15:47:53,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650937766] [2024-12-02 15:47:53,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:53,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 15:47:53,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:53,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 15:47:53,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2402, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 15:47:53,045 INFO L87 Difference]: Start difference. First operand 2573 states and 2683 transitions. Second operand has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:54,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:54,653 INFO L93 Difference]: Finished difference Result 2627 states and 2740 transitions. [2024-12-02 15:47:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:47:54,653 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-12-02 15:47:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:54,656 INFO L225 Difference]: With dead ends: 2627 [2024-12-02 15:47:54,656 INFO L226 Difference]: Without dead ends: 2621 [2024-12-02 15:47:54,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=3924, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 15:47:54,656 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 43 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:54,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1479 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:47:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2024-12-02 15:47:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2600. [2024-12-02 15:47:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2599 states have (on average 1.0434782608695652) internal successors, (2712), 2599 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 2712 transitions. [2024-12-02 15:47:55,635 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 2712 transitions. Word has length 86 [2024-12-02 15:47:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:55,635 INFO L471 AbstractCegarLoop]: Abstraction has 2600 states and 2712 transitions. [2024-12-02 15:47:55,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.156862745098039) internal successors, (110), 51 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 2712 transitions. [2024-12-02 15:47:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 15:47:55,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:55,637 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:55,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2024-12-02 15:47:55,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2024-12-02 15:47:55,837 INFO L396 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:55,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1298989609, now seen corresponding path program 128 times [2024-12-02 15:47:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:55,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29498472] [2024-12-02 15:47:55,838 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:47:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:55,850 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:47:55,850 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:47:56,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:56,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29498472] [2024-12-02 15:47:56,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29498472] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:47:56,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426610171] [2024-12-02 15:47:56,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:47:56,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:47:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:47:56,340 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:47:56,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2024-12-02 15:47:56,465 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:47:56,465 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:47:56,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-02 15:47:56,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:47:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:47:57,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:47:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:47:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426610171] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:47:57,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:47:57,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 53 [2024-12-02 15:47:57,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685121027] [2024-12-02 15:47:57,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:47:57,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 15:47:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:57,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 15:47:57,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2607, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:47:57,407 INFO L87 Difference]: Start difference. First operand 2600 states and 2712 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:47:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:59,178 INFO L93 Difference]: Finished difference Result 2630 states and 2741 transitions. [2024-12-02 15:47:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:47:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-12-02 15:47:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:59,181 INFO L225 Difference]: With dead ends: 2630 [2024-12-02 15:47:59,181 INFO L226 Difference]: Without dead ends: 2568 [2024-12-02 15:47:59,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=238, Invalid=4318, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:47:59,182 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 65 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:59,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1961 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:47:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2024-12-02 15:48:00,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2567. [2024-12-02 15:48:00,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2567 states, 2566 states have (on average 1.0436477007014808) internal successors, (2678), 2566 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 2678 transitions. [2024-12-02 15:48:00,165 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 2678 transitions. Word has length 86 [2024-12-02 15:48:00,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:00,165 INFO L471 AbstractCegarLoop]: Abstraction has 2567 states and 2678 transitions. [2024-12-02 15:48:00,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 2678 transitions. [2024-12-02 15:48:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 15:48:00,166 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:00,166 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:00,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2024-12-02 15:48:00,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2024-12-02 15:48:00,366 INFO L396 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:00,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:00,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1502257337, now seen corresponding path program 129 times [2024-12-02 15:48:00,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:00,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544362307] [2024-12-02 15:48:00,367 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:48:00,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:00,382 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-12-02 15:48:00,382 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:48:00,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544362307] [2024-12-02 15:48:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544362307] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914076168] [2024-12-02 15:48:00,909 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:48:00,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:00,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:00,911 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:00,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2024-12-02 15:48:01,034 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-12-02 15:48:01,034 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:01,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-12-02 15:48:01,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:48:01,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:48:01,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914076168] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:01,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:01,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 55 [2024-12-02 15:48:01,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831235711] [2024-12-02 15:48:01,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:01,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 15:48:01,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:01,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 15:48:01,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2820, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:48:01,921 INFO L87 Difference]: Start difference. First operand 2567 states and 2678 transitions. Second operand has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:03,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:03,831 INFO L93 Difference]: Finished difference Result 2598 states and 2708 transitions. [2024-12-02 15:48:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:48:03,832 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-12-02 15:48:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:03,834 INFO L225 Difference]: With dead ends: 2598 [2024-12-02 15:48:03,835 INFO L226 Difference]: Without dead ends: 2538 [2024-12-02 15:48:03,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=240, Invalid=4730, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:48:03,835 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 89 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:03,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 2672 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:48:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2024-12-02 15:48:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2538. [2024-12-02 15:48:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 2537 states have (on average 1.0437524635396138) internal successors, (2648), 2537 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 2648 transitions. [2024-12-02 15:48:04,838 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 2648 transitions. Word has length 86 [2024-12-02 15:48:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:04,838 INFO L471 AbstractCegarLoop]: Abstraction has 2538 states and 2648 transitions. [2024-12-02 15:48:04,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 2648 transitions. [2024-12-02 15:48:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 15:48:04,840 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:04,840 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:04,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2024-12-02 15:48:05,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:05,040 INFO L396 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:05,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash 52271945, now seen corresponding path program 130 times [2024-12-02 15:48:05,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:05,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659004276] [2024-12-02 15:48:05,041 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:48:05,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:05,054 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:48:05,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:48:05,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:05,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659004276] [2024-12-02 15:48:05,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659004276] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:05,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332118084] [2024-12-02 15:48:05,652 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:48:05,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:05,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:05,654 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:05,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2024-12-02 15:48:05,783 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:48:05,783 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:05,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 15:48:05,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:48:06,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:48:06,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332118084] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:06,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:06,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 56 [2024-12-02 15:48:06,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102486851] [2024-12-02 15:48:06,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:06,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 15:48:06,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:06,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 15:48:06,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2934, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 15:48:06,766 INFO L87 Difference]: Start difference. First operand 2538 states and 2648 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:08,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:08,750 INFO L93 Difference]: Finished difference Result 2571 states and 2680 transitions. [2024-12-02 15:48:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:48:08,750 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-12-02 15:48:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:08,753 INFO L225 Difference]: With dead ends: 2571 [2024-12-02 15:48:08,753 INFO L226 Difference]: Without dead ends: 2513 [2024-12-02 15:48:08,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=237, Invalid=5019, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 15:48:08,754 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 110 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:08,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 3052 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:48:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2024-12-02 15:48:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2513. [2024-12-02 15:48:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2512 states have (on average 1.0437898089171975) internal successors, (2622), 2512 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 2622 transitions. [2024-12-02 15:48:09,747 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 2622 transitions. Word has length 86 [2024-12-02 15:48:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:09,747 INFO L471 AbstractCegarLoop]: Abstraction has 2513 states and 2622 transitions. [2024-12-02 15:48:09,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 2622 transitions. [2024-12-02 15:48:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 15:48:09,748 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:09,748 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:09,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2024-12-02 15:48:09,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2024-12-02 15:48:09,948 INFO L396 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:09,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:09,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2079257049, now seen corresponding path program 131 times [2024-12-02 15:48:09,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:09,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012898088] [2024-12-02 15:48:09,949 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:48:09,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:09,964 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:48:09,964 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:48:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:10,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012898088] [2024-12-02 15:48:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012898088] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:10,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289806560] [2024-12-02 15:48:10,581 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:48:10,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:10,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:10,582 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:10,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2024-12-02 15:48:10,723 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:48:10,724 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:10,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-02 15:48:10,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:48:11,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:48:11,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289806560] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:11,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:11,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 58 [2024-12-02 15:48:11,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887551223] [2024-12-02 15:48:11,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:11,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 15:48:11,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:11,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 15:48:11,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3159, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 15:48:11,724 INFO L87 Difference]: Start difference. First operand 2513 states and 2622 transitions. Second operand has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 58 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:13,885 INFO L93 Difference]: Finished difference Result 2548 states and 2656 transitions. [2024-12-02 15:48:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:48:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 58 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-12-02 15:48:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:13,888 INFO L225 Difference]: With dead ends: 2548 [2024-12-02 15:48:13,888 INFO L226 Difference]: Without dead ends: 2492 [2024-12-02 15:48:13,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=239, Invalid=5461, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 15:48:13,889 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 134 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 3736 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:13,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 3736 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:48:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2024-12-02 15:48:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2492. [2024-12-02 15:48:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2491 states have (on average 1.0437575270975512) internal successors, (2600), 2491 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 2600 transitions. [2024-12-02 15:48:14,859 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 2600 transitions. Word has length 86 [2024-12-02 15:48:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:14,859 INFO L471 AbstractCegarLoop]: Abstraction has 2492 states and 2600 transitions. [2024-12-02 15:48:14,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 58 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:14,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 2600 transitions. [2024-12-02 15:48:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 15:48:14,861 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:14,861 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:14,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2024-12-02 15:48:15,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:15,061 INFO L396 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:15,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:15,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1401398377, now seen corresponding path program 132 times [2024-12-02 15:48:15,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:15,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119694889] [2024-12-02 15:48:15,062 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:48:15,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:15,079 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 15:48:15,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:48:15,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:15,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119694889] [2024-12-02 15:48:15,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119694889] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100594423] [2024-12-02 15:48:15,750 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:48:15,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:15,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:15,751 INFO L229 MonitoredProcess]: Starting monitored process 135 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:15,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2024-12-02 15:48:15,878 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 15:48:15,878 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:15,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-12-02 15:48:15,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:48:16,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:48:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100594423] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:16,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:16,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 61 [2024-12-02 15:48:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58238334] [2024-12-02 15:48:16,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:16,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 15:48:16,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:16,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 15:48:16,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3507, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 15:48:16,845 INFO L87 Difference]: Start difference. First operand 2492 states and 2600 transitions. Second operand has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 61 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:19,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:19,160 INFO L93 Difference]: Finished difference Result 2529 states and 2636 transitions. [2024-12-02 15:48:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:48:19,161 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 61 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-12-02 15:48:19,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:19,163 INFO L225 Difference]: With dead ends: 2529 [2024-12-02 15:48:19,163 INFO L226 Difference]: Without dead ends: 2475 [2024-12-02 15:48:19,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=246, Invalid=6074, Unknown=0, NotChecked=0, Total=6320 [2024-12-02 15:48:19,164 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 158 mSDsluCounter, 4390 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 4506 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:19,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 4506 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:48:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2024-12-02 15:48:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2475. [2024-12-02 15:48:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2474 states have (on average 1.0436540016168148) internal successors, (2582), 2474 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 2582 transitions. [2024-12-02 15:48:20,155 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 2582 transitions. Word has length 86 [2024-12-02 15:48:20,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:20,155 INFO L471 AbstractCegarLoop]: Abstraction has 2475 states and 2582 transitions. [2024-12-02 15:48:20,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 61 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:20,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 2582 transitions. [2024-12-02 15:48:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 15:48:20,156 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:20,156 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:20,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2024-12-02 15:48:20,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:20,356 INFO L396 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:20,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash 120632057, now seen corresponding path program 133 times [2024-12-02 15:48:20,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:20,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803925814] [2024-12-02 15:48:20,357 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:48:20,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:48:21,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803925814] [2024-12-02 15:48:21,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803925814] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521565536] [2024-12-02 15:48:21,050 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:48:21,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:21,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:21,051 INFO L229 MonitoredProcess]: Starting monitored process 136 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:21,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2024-12-02 15:48:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:21,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-12-02 15:48:21,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:48:21,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:48:22,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521565536] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:22,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:22,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 63 [2024-12-02 15:48:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224647016] [2024-12-02 15:48:22,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:22,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 15:48:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:22,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 15:48:22,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3752, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 15:48:22,125 INFO L87 Difference]: Start difference. First operand 2475 states and 2582 transitions. Second operand has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 63 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:24,662 INFO L93 Difference]: Finished difference Result 2514 states and 2620 transitions. [2024-12-02 15:48:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 15:48:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 63 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-12-02 15:48:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:24,665 INFO L225 Difference]: With dead ends: 2514 [2024-12-02 15:48:24,665 INFO L226 Difference]: Without dead ends: 2462 [2024-12-02 15:48:24,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=248, Invalid=6558, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 15:48:24,666 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 182 mSDsluCounter, 5586 mSDsCounter, 0 mSdLazyCounter, 3242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 5716 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:24,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 5716 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:48:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2024-12-02 15:48:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2462. [2024-12-02 15:48:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2461 states have (on average 1.0434782608695652) internal successors, (2568), 2461 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 2568 transitions. [2024-12-02 15:48:25,646 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 2568 transitions. Word has length 86 [2024-12-02 15:48:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:25,646 INFO L471 AbstractCegarLoop]: Abstraction has 2462 states and 2568 transitions. [2024-12-02 15:48:25,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 63 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 2568 transitions. [2024-12-02 15:48:25,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 15:48:25,648 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:25,648 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:25,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2024-12-02 15:48:25,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2024-12-02 15:48:25,848 INFO L396 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:25,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1846338167, now seen corresponding path program 134 times [2024-12-02 15:48:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:25,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786862722] [2024-12-02 15:48:25,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:48:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:25,863 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:48:25,863 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:48:26,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:26,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786862722] [2024-12-02 15:48:26,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786862722] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:26,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472013447] [2024-12-02 15:48:26,668 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:48:26,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:26,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:26,670 INFO L229 MonitoredProcess]: Starting monitored process 137 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:26,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2024-12-02 15:48:26,798 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:48:26,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:26,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-12-02 15:48:26,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:48:27,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:48:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472013447] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:27,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 65 [2024-12-02 15:48:27,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868706681] [2024-12-02 15:48:27,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:27,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-12-02 15:48:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:27,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-12-02 15:48:27,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=4005, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 15:48:27,796 INFO L87 Difference]: Start difference. First operand 2462 states and 2568 transitions. Second operand has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:30,449 INFO L93 Difference]: Finished difference Result 2635 states and 2750 transitions. [2024-12-02 15:48:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:48:30,449 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-12-02 15:48:30,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:30,452 INFO L225 Difference]: With dead ends: 2635 [2024-12-02 15:48:30,452 INFO L226 Difference]: Without dead ends: 2625 [2024-12-02 15:48:30,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=250, Invalid=7060, Unknown=0, NotChecked=0, Total=7310 [2024-12-02 15:48:30,453 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 225 mSDsluCounter, 6016 mSDsCounter, 0 mSdLazyCounter, 3471 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 6158 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:30,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 6158 Invalid, 3472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3471 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:48:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2024-12-02 15:48:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2475. [2024-12-02 15:48:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2474 states have (on average 1.0436540016168148) internal successors, (2582), 2474 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 2582 transitions. [2024-12-02 15:48:31,426 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 2582 transitions. Word has length 86 [2024-12-02 15:48:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:31,427 INFO L471 AbstractCegarLoop]: Abstraction has 2475 states and 2582 transitions. [2024-12-02 15:48:31,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 2582 transitions. [2024-12-02 15:48:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 15:48:31,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:31,428 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:31,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2024-12-02 15:48:31,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2024-12-02 15:48:31,628 INFO L396 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:31,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:31,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1142522883, now seen corresponding path program 135 times [2024-12-02 15:48:31,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:31,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3524011] [2024-12-02 15:48:31,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:48:31,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:31,645 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-12-02 15:48:31,645 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:48:31,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:31,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3524011] [2024-12-02 15:48:31,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3524011] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:31,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511598283] [2024-12-02 15:48:31,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:48:31,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:31,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:31,821 INFO L229 MonitoredProcess]: Starting monitored process 138 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:31,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2024-12-02 15:48:31,955 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-12-02 15:48:31,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:31,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 15:48:31,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:48:32,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:48:32,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511598283] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:32,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2024-12-02 15:48:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252649027] [2024-12-02 15:48:32,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:32,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 15:48:32,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:32,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 15:48:32,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:48:32,259 INFO L87 Difference]: Start difference. First operand 2475 states and 2582 transitions. Second operand has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:34,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:34,018 INFO L93 Difference]: Finished difference Result 3178 states and 3347 transitions. [2024-12-02 15:48:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-12-02 15:48:34,019 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-12-02 15:48:34,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:34,022 INFO L225 Difference]: With dead ends: 3178 [2024-12-02 15:48:34,022 INFO L226 Difference]: Without dead ends: 2779 [2024-12-02 15:48:34,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 149 SyntacticMatches, 16 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1010, Invalid=3280, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 15:48:34,022 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 74 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:34,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 283 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:48:34,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2024-12-02 15:48:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2778. [2024-12-02 15:48:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2777 states have (on average 1.0446525027007563) internal successors, (2901), 2777 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 2901 transitions. [2024-12-02 15:48:35,125 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 2901 transitions. Word has length 88 [2024-12-02 15:48:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:35,125 INFO L471 AbstractCegarLoop]: Abstraction has 2778 states and 2901 transitions. [2024-12-02 15:48:35,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 2901 transitions. [2024-12-02 15:48:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 15:48:35,127 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:35,127 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:35,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2024-12-02 15:48:35,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2024-12-02 15:48:35,328 INFO L396 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:35,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:35,328 INFO L85 PathProgramCache]: Analyzing trace with hash 158363453, now seen corresponding path program 136 times [2024-12-02 15:48:35,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:35,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519935970] [2024-12-02 15:48:35,328 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:48:35,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:35,339 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:48:35,339 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:48:35,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:35,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519935970] [2024-12-02 15:48:35,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519935970] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:35,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530096825] [2024-12-02 15:48:35,519 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:48:35,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:35,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:35,520 INFO L229 MonitoredProcess]: Starting monitored process 139 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:35,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2024-12-02 15:48:35,641 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:48:35,642 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:35,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 15:48:35,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:48:35,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 15:48:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530096825] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:35,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:35,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 29 [2024-12-02 15:48:35,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592828557] [2024-12-02 15:48:35,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:35,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 15:48:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:35,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 15:48:35,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:48:35,918 INFO L87 Difference]: Start difference. First operand 2778 states and 2901 transitions. Second operand has 29 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:37,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:37,687 INFO L93 Difference]: Finished difference Result 2981 states and 3122 transitions. [2024-12-02 15:48:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-12-02 15:48:37,688 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-12-02 15:48:37,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:37,690 INFO L225 Difference]: With dead ends: 2981 [2024-12-02 15:48:37,691 INFO L226 Difference]: Without dead ends: 2952 [2024-12-02 15:48:37,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 150 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1071, Invalid=2961, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:48:37,691 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 68 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:37,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 192 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:48:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2024-12-02 15:48:38,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2873. [2024-12-02 15:48:38,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2872 states have (on average 1.0487465181058495) internal successors, (3012), 2872 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3012 transitions. [2024-12-02 15:48:38,826 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3012 transitions. Word has length 88 [2024-12-02 15:48:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:38,826 INFO L471 AbstractCegarLoop]: Abstraction has 2873 states and 3012 transitions. [2024-12-02 15:48:38,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3012 transitions. [2024-12-02 15:48:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 15:48:38,828 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:38,828 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:38,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2024-12-02 15:48:39,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2024-12-02 15:48:39,028 INFO L396 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:39,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1743289683, now seen corresponding path program 137 times [2024-12-02 15:48:39,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:39,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638438078] [2024-12-02 15:48:39,028 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:48:39,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:39,050 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-12-02 15:48:39,050 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:48:39,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:39,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638438078] [2024-12-02 15:48:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638438078] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951366718] [2024-12-02 15:48:39,642 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:48:39,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:39,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:39,643 INFO L229 MonitoredProcess]: Starting monitored process 140 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:39,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2024-12-02 15:48:39,780 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-12-02 15:48:39,780 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:39,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 15:48:39,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:48:41,258 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 31 proven. 450 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:48:42,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951366718] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:42,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:42,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 83 [2024-12-02 15:48:42,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045906447] [2024-12-02 15:48:42,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:42,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-12-02 15:48:42,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:42,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-12-02 15:48:42,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=6563, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 15:48:42,432 INFO L87 Difference]: Start difference. First operand 2873 states and 3012 transitions. Second operand has 83 states, 83 states have (on average 2.325301204819277) internal successors, (193), 83 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:48,392 INFO L93 Difference]: Finished difference Result 3430 states and 3589 transitions. [2024-12-02 15:48:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 15:48:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.325301204819277) internal successors, (193), 83 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-12-02 15:48:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:48,395 INFO L225 Difference]: With dead ends: 3430 [2024-12-02 15:48:48,395 INFO L226 Difference]: Without dead ends: 3381 [2024-12-02 15:48:48,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 111 SyntacticMatches, 17 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=808, Invalid=15194, Unknown=0, NotChecked=0, Total=16002 [2024-12-02 15:48:48,396 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 4675 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 4704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:48,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1632 Invalid, 4704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4675 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 15:48:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2024-12-02 15:48:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3089. [2024-12-02 15:48:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3089 states, 3088 states have (on average 1.0485751295336787) internal successors, (3238), 3088 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 3238 transitions. [2024-12-02 15:48:49,615 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 3238 transitions. Word has length 88 [2024-12-02 15:48:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:49,615 INFO L471 AbstractCegarLoop]: Abstraction has 3089 states and 3238 transitions. [2024-12-02 15:48:49,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.325301204819277) internal successors, (193), 83 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 3238 transitions. [2024-12-02 15:48:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 15:48:49,616 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:49,616 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:49,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2024-12-02 15:48:49,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2024-12-02 15:48:49,817 INFO L396 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:49,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:49,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1892395027, now seen corresponding path program 138 times [2024-12-02 15:48:49,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:49,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591962764] [2024-12-02 15:48:49,817 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:48:49,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:49,837 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-12-02 15:48:49,837 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 31 proven. 450 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:48:50,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:50,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591962764] [2024-12-02 15:48:50,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591962764] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:48:50,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668029295] [2024-12-02 15:48:50,553 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:48:50,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:48:50,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:48:50,554 INFO L229 MonitoredProcess]: Starting monitored process 141 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:48:50,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2024-12-02 15:48:50,687 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-12-02 15:48:50,687 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:48:50,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 15:48:50,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:48:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 31 proven. 450 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:48:52,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:48:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 31 proven. 450 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:48:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668029295] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:48:53,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:48:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 84 [2024-12-02 15:48:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718831601] [2024-12-02 15:48:53,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:48:53,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-12-02 15:48:53,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:53,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-12-02 15:48:53,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=6726, Unknown=0, NotChecked=0, Total=6972 [2024-12-02 15:48:53,706 INFO L87 Difference]: Start difference. First operand 3089 states and 3238 transitions. Second operand has 84 states, 84 states have (on average 2.369047619047619) internal successors, (199), 84 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:48:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:59,448 INFO L93 Difference]: Finished difference Result 4465 states and 4632 transitions. [2024-12-02 15:48:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-12-02 15:48:59,448 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.369047619047619) internal successors, (199), 84 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-12-02 15:48:59,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:59,452 INFO L225 Difference]: With dead ends: 4465 [2024-12-02 15:48:59,452 INFO L226 Difference]: Without dead ends: 4358 [2024-12-02 15:48:59,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 112 SyntacticMatches, 15 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3048 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1591, Invalid=14411, Unknown=0, NotChecked=0, Total=16002 [2024-12-02 15:48:59,453 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 110 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:59,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1127 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:48:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4358 states. [2024-12-02 15:49:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4358 to 3107. [2024-12-02 15:49:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3106 states have (on average 1.048293625241468) internal successors, (3256), 3106 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 3256 transitions. [2024-12-02 15:49:00,744 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 3256 transitions. Word has length 88 [2024-12-02 15:49:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:00,744 INFO L471 AbstractCegarLoop]: Abstraction has 3107 states and 3256 transitions. [2024-12-02 15:49:00,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.369047619047619) internal successors, (199), 84 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 3256 transitions. [2024-12-02 15:49:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:00,746 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:00,746 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:00,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2024-12-02 15:49:00,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2024-12-02 15:49:00,946 INFO L396 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:00,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:00,947 INFO L85 PathProgramCache]: Analyzing trace with hash -236162663, now seen corresponding path program 139 times [2024-12-02 15:49:00,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:00,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519594790] [2024-12-02 15:49:00,947 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:49:00,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-12-02 15:49:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519594790] [2024-12-02 15:49:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519594790] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012529265] [2024-12-02 15:49:01,312 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:49:01,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:01,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:01,314 INFO L229 MonitoredProcess]: Starting monitored process 142 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:01,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2024-12-02 15:49:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:01,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 15:49:01,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-12-02 15:49:02,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-12-02 15:49:02,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012529265] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:02,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:02,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 50 [2024-12-02 15:49:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351505979] [2024-12-02 15:49:02,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:02,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-12-02 15:49:02,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:02,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-12-02 15:49:02,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2304, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 15:49:02,758 INFO L87 Difference]: Start difference. First operand 3107 states and 3256 transitions. Second operand has 50 states, 50 states have (on average 2.42) internal successors, (121), 50 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:05,951 INFO L93 Difference]: Finished difference Result 3517 states and 3681 transitions. [2024-12-02 15:49:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:49:05,952 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.42) internal successors, (121), 50 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:49:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:05,955 INFO L225 Difference]: With dead ends: 3517 [2024-12-02 15:49:05,955 INFO L226 Difference]: Without dead ends: 3429 [2024-12-02 15:49:05,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 143 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=377, Invalid=5025, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 15:49:05,956 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 18 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:05,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 904 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:49:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2024-12-02 15:49:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 3392. [2024-12-02 15:49:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3392 states, 3391 states have (on average 1.0439398407549396) internal successors, (3540), 3391 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 3540 transitions. [2024-12-02 15:49:07,328 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 3540 transitions. Word has length 90 [2024-12-02 15:49:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:07,328 INFO L471 AbstractCegarLoop]: Abstraction has 3392 states and 3540 transitions. [2024-12-02 15:49:07,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.42) internal successors, (121), 50 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 3540 transitions. [2024-12-02 15:49:07,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:07,330 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:07,330 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:07,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2024-12-02 15:49:07,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,142 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:07,531 INFO L396 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:07,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash 886054945, now seen corresponding path program 140 times [2024-12-02 15:49:07,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:07,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457522866] [2024-12-02 15:49:07,531 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:49:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:07,544 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:49:07,544 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:49:08,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:08,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457522866] [2024-12-02 15:49:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457522866] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348236468] [2024-12-02 15:49:08,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:49:08,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:08,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:08,066 INFO L229 MonitoredProcess]: Starting monitored process 143 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:08,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2024-12-02 15:49:08,195 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:49:08,195 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:08,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 15:49:08,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:49:08,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:49:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348236468] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:09,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 60 [2024-12-02 15:49:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687362983] [2024-12-02 15:49:09,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:09,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 15:49:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:09,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 15:49:09,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3362, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:49:09,351 INFO L87 Difference]: Start difference. First operand 3392 states and 3540 transitions. Second operand has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 60 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:11,549 INFO L93 Difference]: Finished difference Result 3473 states and 3624 transitions. [2024-12-02 15:49:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:49:11,549 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 60 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:49:11,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:11,552 INFO L225 Difference]: With dead ends: 3473 [2024-12-02 15:49:11,552 INFO L226 Difference]: Without dead ends: 3444 [2024-12-02 15:49:11,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=270, Invalid=5280, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 15:49:11,553 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 58 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:11,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1869 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:49:11,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2024-12-02 15:49:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 3398. [2024-12-02 15:49:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3398 states, 3397 states have (on average 1.0441566087724463) internal successors, (3547), 3397 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 3547 transitions. [2024-12-02 15:49:12,953 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 3547 transitions. Word has length 90 [2024-12-02 15:49:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:12,953 INFO L471 AbstractCegarLoop]: Abstraction has 3398 states and 3547 transitions. [2024-12-02 15:49:12,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 60 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 3547 transitions. [2024-12-02 15:49:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:12,956 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:12,956 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:12,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2024-12-02 15:49:13,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2024-12-02 15:49:13,156 INFO L396 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:13,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1160323097, now seen corresponding path program 141 times [2024-12-02 15:49:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:13,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132594021] [2024-12-02 15:49:13,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:49:13,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:13,171 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-12-02 15:49:13,172 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-12-02 15:49:13,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:13,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132594021] [2024-12-02 15:49:13,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132594021] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:13,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567527610] [2024-12-02 15:49:13,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:49:13,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:13,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:13,480 INFO L229 MonitoredProcess]: Starting monitored process 144 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:13,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2024-12-02 15:49:13,630 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-12-02 15:49:13,630 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:13,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 15:49:13,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-12-02 15:49:14,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-12-02 15:49:14,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567527610] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:14,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:14,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-12-02 15:49:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483101587] [2024-12-02 15:49:14,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:14,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 15:49:14,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:14,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 15:49:14,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:49:14,784 INFO L87 Difference]: Start difference. First operand 3398 states and 3547 transitions. Second operand has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:17,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:17,193 INFO L93 Difference]: Finished difference Result 3565 states and 3731 transitions. [2024-12-02 15:49:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 15:49:17,193 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:49:17,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:17,197 INFO L225 Difference]: With dead ends: 3565 [2024-12-02 15:49:17,197 INFO L226 Difference]: Without dead ends: 3363 [2024-12-02 15:49:17,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 144 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=548, Invalid=4422, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:49:17,198 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:17,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 648 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:49:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2024-12-02 15:49:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3362. [2024-12-02 15:49:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 3361 states have (on average 1.0398690865813747) internal successors, (3495), 3361 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 3495 transitions. [2024-12-02 15:49:18,633 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 3495 transitions. Word has length 90 [2024-12-02 15:49:18,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:18,633 INFO L471 AbstractCegarLoop]: Abstraction has 3362 states and 3495 transitions. [2024-12-02 15:49:18,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 3495 transitions. [2024-12-02 15:49:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:18,635 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:18,635 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:18,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2024-12-02 15:49:18,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2024-12-02 15:49:18,836 INFO L396 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:18,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1252699313, now seen corresponding path program 142 times [2024-12-02 15:49:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:18,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352941737] [2024-12-02 15:49:18,836 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:49:18,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:18,849 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:49:18,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:49:19,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:19,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352941737] [2024-12-02 15:49:19,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352941737] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:19,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79114271] [2024-12-02 15:49:19,378 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:49:19,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:19,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:19,380 INFO L229 MonitoredProcess]: Starting monitored process 145 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:19,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2024-12-02 15:49:19,509 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:49:19,509 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:19,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 15:49:19,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:49:20,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:49:20,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79114271] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:20,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:20,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 55 [2024-12-02 15:49:20,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791493848] [2024-12-02 15:49:20,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:20,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 15:49:20,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:20,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 15:49:20,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2819, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:49:20,389 INFO L87 Difference]: Start difference. First operand 3362 states and 3495 transitions. Second operand has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:22,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:22,632 INFO L93 Difference]: Finished difference Result 3394 states and 3526 transitions. [2024-12-02 15:49:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:49:22,632 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:49:22,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:22,635 INFO L225 Difference]: With dead ends: 3394 [2024-12-02 15:49:22,635 INFO L226 Difference]: Without dead ends: 3330 [2024-12-02 15:49:22,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=244, Invalid=4726, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:49:22,636 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 74 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:22,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2305 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:49:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2024-12-02 15:49:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3329. [2024-12-02 15:49:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 3328 states have (on average 1.0399639423076923) internal successors, (3461), 3328 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 3461 transitions. [2024-12-02 15:49:24,033 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 3461 transitions. Word has length 90 [2024-12-02 15:49:24,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:24,033 INFO L471 AbstractCegarLoop]: Abstraction has 3329 states and 3461 transitions. [2024-12-02 15:49:24,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:24,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 3461 transitions. [2024-12-02 15:49:24,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:24,035 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:24,035 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:24,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2024-12-02 15:49:24,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:24,236 INFO L396 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:24,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1611721407, now seen corresponding path program 143 times [2024-12-02 15:49:24,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:24,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692228430] [2024-12-02 15:49:24,236 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:49:24,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:24,252 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-12-02 15:49:24,252 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:49:24,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:24,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692228430] [2024-12-02 15:49:24,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692228430] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:24,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369002863] [2024-12-02 15:49:24,829 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:49:24,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:24,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:24,831 INFO L229 MonitoredProcess]: Starting monitored process 146 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:24,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2024-12-02 15:49:24,969 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-12-02 15:49:24,969 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:24,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 15:49:24,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:49:25,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:49:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369002863] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:25,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:25,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 57 [2024-12-02 15:49:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484838318] [2024-12-02 15:49:25,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:25,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 15:49:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:25,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 15:49:25,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=3040, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 15:49:25,972 INFO L87 Difference]: Start difference. First operand 3329 states and 3461 transitions. Second operand has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:28,269 INFO L93 Difference]: Finished difference Result 3362 states and 3493 transitions. [2024-12-02 15:49:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:49:28,269 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:49:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:28,272 INFO L225 Difference]: With dead ends: 3362 [2024-12-02 15:49:28,272 INFO L226 Difference]: Without dead ends: 3300 [2024-12-02 15:49:28,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=246, Invalid=5156, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 15:49:28,273 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 98 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:28,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 2955 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:49:28,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2024-12-02 15:49:29,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3300. [2024-12-02 15:49:29,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3299 states have (on average 1.0400121248863292) internal successors, (3431), 3299 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 3431 transitions. [2024-12-02 15:49:29,665 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 3431 transitions. Word has length 90 [2024-12-02 15:49:29,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:29,665 INFO L471 AbstractCegarLoop]: Abstraction has 3300 states and 3431 transitions. [2024-12-02 15:49:29,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 3431 transitions. [2024-12-02 15:49:29,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:29,667 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:29,667 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:29,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2024-12-02 15:49:29,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:29,867 INFO L396 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:29,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1186571823, now seen corresponding path program 144 times [2024-12-02 15:49:29,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:29,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396986705] [2024-12-02 15:49:29,868 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:49:29,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:29,889 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-12-02 15:49:29,890 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:49:30,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:30,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396986705] [2024-12-02 15:49:30,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396986705] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:30,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304330645] [2024-12-02 15:49:30,537 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:49:30,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:30,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:30,538 INFO L229 MonitoredProcess]: Starting monitored process 147 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:30,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2024-12-02 15:49:30,681 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-12-02 15:49:30,681 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:30,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-02 15:49:30,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:49:31,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:49:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304330645] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:31,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:31,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 60 [2024-12-02 15:49:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752171146] [2024-12-02 15:49:31,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:31,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 15:49:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:31,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 15:49:31,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3382, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:49:31,673 INFO L87 Difference]: Start difference. First operand 3300 states and 3431 transitions. Second operand has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:34,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:34,057 INFO L93 Difference]: Finished difference Result 3335 states and 3465 transitions. [2024-12-02 15:49:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:49:34,058 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:49:34,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:34,061 INFO L225 Difference]: With dead ends: 3335 [2024-12-02 15:49:34,061 INFO L226 Difference]: Without dead ends: 3275 [2024-12-02 15:49:34,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=253, Invalid=5753, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 15:49:34,062 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 125 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 3634 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:34,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 3634 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:49:34,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2024-12-02 15:49:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3275. [2024-12-02 15:49:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 1.0400122174709836) internal successors, (3405), 3274 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 3405 transitions. [2024-12-02 15:49:35,431 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 3405 transitions. Word has length 90 [2024-12-02 15:49:35,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:35,431 INFO L471 AbstractCegarLoop]: Abstraction has 3275 states and 3405 transitions. [2024-12-02 15:49:35,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:35,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 3405 transitions. [2024-12-02 15:49:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:35,433 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:35,433 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:35,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2024-12-02 15:49:35,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:35,633 INFO L396 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:35,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:35,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1055294879, now seen corresponding path program 145 times [2024-12-02 15:49:35,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:35,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022640428] [2024-12-02 15:49:35,634 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:49:35,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:49:36,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:36,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022640428] [2024-12-02 15:49:36,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022640428] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:36,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88394960] [2024-12-02 15:49:36,309 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:49:36,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:36,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:36,311 INFO L229 MonitoredProcess]: Starting monitored process 148 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:36,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2024-12-02 15:49:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:36,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-12-02 15:49:36,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:49:37,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:49:37,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88394960] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:37,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:37,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 62 [2024-12-02 15:49:37,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378161613] [2024-12-02 15:49:37,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:37,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-12-02 15:49:37,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:37,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-12-02 15:49:37,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=3623, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 15:49:37,511 INFO L87 Difference]: Start difference. First operand 3275 states and 3405 transitions. Second operand has 62 states, 62 states have (on average 2.129032258064516) internal successors, (132), 62 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:40,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:40,117 INFO L93 Difference]: Finished difference Result 3312 states and 3441 transitions. [2024-12-02 15:49:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:49:40,118 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.129032258064516) internal successors, (132), 62 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:49:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:40,121 INFO L225 Difference]: With dead ends: 3312 [2024-12-02 15:49:40,121 INFO L226 Difference]: Without dead ends: 3254 [2024-12-02 15:49:40,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=255, Invalid=6225, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 15:49:40,122 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 149 mSDsluCounter, 4057 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:40,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 4167 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:49:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2024-12-02 15:49:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3254. [2024-12-02 15:49:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 3253 states have (on average 1.0399631109744851) internal successors, (3383), 3253 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 3383 transitions. [2024-12-02 15:49:41,498 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 3383 transitions. Word has length 90 [2024-12-02 15:49:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:41,498 INFO L471 AbstractCegarLoop]: Abstraction has 3254 states and 3383 transitions. [2024-12-02 15:49:41,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.129032258064516) internal successors, (132), 62 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 3383 transitions. [2024-12-02 15:49:41,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:41,500 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:41,500 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:41,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2024-12-02 15:49:41,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:41,701 INFO L396 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:41,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:41,701 INFO L85 PathProgramCache]: Analyzing trace with hash 395409137, now seen corresponding path program 146 times [2024-12-02 15:49:41,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:41,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571567443] [2024-12-02 15:49:41,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:49:41,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:41,714 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:49:41,715 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:49:42,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:42,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571567443] [2024-12-02 15:49:42,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571567443] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:42,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547339303] [2024-12-02 15:49:42,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:49:42,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:42,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:42,447 INFO L229 MonitoredProcess]: Starting monitored process 149 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:42,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2024-12-02 15:49:42,589 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:49:42,589 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:42,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-12-02 15:49:42,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:49:43,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:49:43,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547339303] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:43,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:43,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 64 [2024-12-02 15:49:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478401439] [2024-12-02 15:49:43,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:43,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 15:49:43,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:43,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 15:49:43,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3872, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:49:43,610 INFO L87 Difference]: Start difference. First operand 3254 states and 3383 transitions. Second operand has 64 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:46,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:46,466 INFO L93 Difference]: Finished difference Result 3293 states and 3421 transitions. [2024-12-02 15:49:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 15:49:46,466 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:49:46,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:46,470 INFO L225 Difference]: With dead ends: 3293 [2024-12-02 15:49:46,470 INFO L226 Difference]: Without dead ends: 3237 [2024-12-02 15:49:46,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=257, Invalid=6715, Unknown=0, NotChecked=0, Total=6972 [2024-12-02 15:49:46,470 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 170 mSDsluCounter, 5406 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:46,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 5530 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:49:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2024-12-02 15:49:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 3237. [2024-12-02 15:49:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 3236 states have (on average 1.0398640296662547) internal successors, (3365), 3236 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 3365 transitions. [2024-12-02 15:49:47,819 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 3365 transitions. Word has length 90 [2024-12-02 15:49:47,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:47,819 INFO L471 AbstractCegarLoop]: Abstraction has 3237 states and 3365 transitions. [2024-12-02 15:49:47,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 3365 transitions. [2024-12-02 15:49:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:47,821 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:47,821 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:47,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2024-12-02 15:49:48,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,149 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:48,021 INFO L396 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:48,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash -493400191, now seen corresponding path program 147 times [2024-12-02 15:49:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311366976] [2024-12-02 15:49:48,021 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:49:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:48,040 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-12-02 15:49:48,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:49:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311366976] [2024-12-02 15:49:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311366976] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336318939] [2024-12-02 15:49:48,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:49:48,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:48,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:48,859 INFO L229 MonitoredProcess]: Starting monitored process 150 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:48,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2024-12-02 15:49:49,016 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-12-02 15:49:49,017 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:49,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-12-02 15:49:49,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:49:49,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:49:50,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336318939] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:50,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:50,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 66 [2024-12-02 15:49:50,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378323674] [2024-12-02 15:49:50,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:50,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 15:49:50,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:50,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 15:49:50,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=4129, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 15:49:50,093 INFO L87 Difference]: Start difference. First operand 3237 states and 3365 transitions. Second operand has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:53,144 INFO L93 Difference]: Finished difference Result 3278 states and 3405 transitions. [2024-12-02 15:49:53,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:49:53,144 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:49:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:53,147 INFO L225 Difference]: With dead ends: 3278 [2024-12-02 15:49:53,147 INFO L226 Difference]: Without dead ends: 3224 [2024-12-02 15:49:53,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=259, Invalid=7223, Unknown=0, NotChecked=0, Total=7482 [2024-12-02 15:49:53,148 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 197 mSDsluCounter, 5720 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 5858 SdHoareTripleChecker+Invalid, 3349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:53,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 5858 Invalid, 3349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3348 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:49:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2024-12-02 15:49:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3224. [2024-12-02 15:49:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3223 states have (on average 1.0397145516599442) internal successors, (3351), 3223 states have internal predecessors, (3351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 3351 transitions. [2024-12-02 15:49:54,519 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 3351 transitions. Word has length 90 [2024-12-02 15:49:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:54,519 INFO L471 AbstractCegarLoop]: Abstraction has 3224 states and 3351 transitions. [2024-12-02 15:49:54,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:49:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 3351 transitions. [2024-12-02 15:49:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 15:49:54,521 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:54,521 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:54,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2024-12-02 15:49:54,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2024-12-02 15:49:54,721 INFO L396 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:54,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:54,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1647049711, now seen corresponding path program 148 times [2024-12-02 15:49:54,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:54,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879948692] [2024-12-02 15:49:54,722 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:49:54,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:54,736 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:49:54,736 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 514 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:49:55,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:55,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879948692] [2024-12-02 15:49:55,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879948692] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:49:55,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121040530] [2024-12-02 15:49:55,613 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:49:55,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:49:55,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:49:55,615 INFO L229 MonitoredProcess]: Starting monitored process 151 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:49:55,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2024-12-02 15:49:55,751 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:49:55,751 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:49:55,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-12-02 15:49:55,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:49:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 514 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:49:55,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:49:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 514 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:49:56,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121040530] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:49:56,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:49:56,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 68 [2024-12-02 15:49:56,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575362249] [2024-12-02 15:49:56,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:49:56,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 15:49:56,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:56,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 15:49:56,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=4395, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:49:56,733 INFO L87 Difference]: Start difference. First operand 3224 states and 3351 transitions. Second operand has 68 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 68 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:00,005 INFO L93 Difference]: Finished difference Result 3422 states and 3559 transitions. [2024-12-02 15:50:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 15:50:00,006 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 68 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-12-02 15:50:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:00,010 INFO L225 Difference]: With dead ends: 3422 [2024-12-02 15:50:00,010 INFO L226 Difference]: Without dead ends: 3412 [2024-12-02 15:50:00,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=260, Invalid=7750, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 15:50:00,011 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 239 mSDsluCounter, 5983 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 6133 SdHoareTripleChecker+Invalid, 3482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:00,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 6133 Invalid, 3482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:50:00,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2024-12-02 15:50:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3237. [2024-12-02 15:50:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 3236 states have (on average 1.0398640296662547) internal successors, (3365), 3236 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 3365 transitions. [2024-12-02 15:50:01,373 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 3365 transitions. Word has length 90 [2024-12-02 15:50:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:01,373 INFO L471 AbstractCegarLoop]: Abstraction has 3237 states and 3365 transitions. [2024-12-02 15:50:01,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 68 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:01,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 3365 transitions. [2024-12-02 15:50:01,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:50:01,375 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:01,375 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:01,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2024-12-02 15:50:01,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2024-12-02 15:50:01,576 INFO L396 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:01,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1322309259, now seen corresponding path program 149 times [2024-12-02 15:50:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376782101] [2024-12-02 15:50:01,576 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:50:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:01,591 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:50:01,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:50:01,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:01,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376782101] [2024-12-02 15:50:01,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376782101] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:01,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519754543] [2024-12-02 15:50:01,790 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:50:01,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:01,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:01,791 INFO L229 MonitoredProcess]: Starting monitored process 152 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:01,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2024-12-02 15:50:01,922 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:50:01,922 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:01,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 15:50:01,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:50:02,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:50:02,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519754543] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:02,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:02,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 30 [2024-12-02 15:50:02,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667971689] [2024-12-02 15:50:02,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:02,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 15:50:02,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:02,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 15:50:02,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=561, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:50:02,272 INFO L87 Difference]: Start difference. First operand 3237 states and 3365 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:04,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:04,439 INFO L93 Difference]: Finished difference Result 3342 states and 3470 transitions. [2024-12-02 15:50:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 15:50:04,439 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-12-02 15:50:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:04,443 INFO L225 Difference]: With dead ends: 3342 [2024-12-02 15:50:04,443 INFO L226 Difference]: Without dead ends: 3336 [2024-12-02 15:50:04,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 156 SyntacticMatches, 19 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1515, Invalid=2907, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 15:50:04,444 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 194 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:04,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 475 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:50:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2024-12-02 15:50:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 3185. [2024-12-02 15:50:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3184 states have (on average 1.0392587939698492) internal successors, (3309), 3184 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3309 transitions. [2024-12-02 15:50:05,777 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3309 transitions. Word has length 92 [2024-12-02 15:50:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:05,778 INFO L471 AbstractCegarLoop]: Abstraction has 3185 states and 3309 transitions. [2024-12-02 15:50:05,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3309 transitions. [2024-12-02 15:50:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:50:05,779 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:05,779 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:05,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2024-12-02 15:50:05,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2024-12-02 15:50:05,980 INFO L396 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:05,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash 294133429, now seen corresponding path program 150 times [2024-12-02 15:50:05,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:05,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392026916] [2024-12-02 15:50:05,980 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:50:05,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:05,996 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-12-02 15:50:05,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:50:06,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392026916] [2024-12-02 15:50:06,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392026916] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554015007] [2024-12-02 15:50:06,215 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:50:06,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:06,217 INFO L229 MonitoredProcess]: Starting monitored process 153 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:06,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2024-12-02 15:50:06,361 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-12-02 15:50:06,361 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:06,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 15:50:06,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:50:06,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:50:06,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554015007] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:06,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:06,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-12-02 15:50:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490744291] [2024-12-02 15:50:06,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:06,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 15:50:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:06,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 15:50:06,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=650, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:50:06,734 INFO L87 Difference]: Start difference. First operand 3185 states and 3309 transitions. Second operand has 32 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:08,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:08,797 INFO L93 Difference]: Finished difference Result 3660 states and 3817 transitions. [2024-12-02 15:50:08,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 15:50:08,798 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-12-02 15:50:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:08,802 INFO L225 Difference]: With dead ends: 3660 [2024-12-02 15:50:08,802 INFO L226 Difference]: Without dead ends: 3234 [2024-12-02 15:50:08,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 155 SyntacticMatches, 18 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1845 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1585, Invalid=3107, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 15:50:08,802 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 277 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:08,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 536 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:50:08,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2024-12-02 15:50:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 3217. [2024-12-02 15:50:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 3216 states have (on average 1.0388681592039801) internal successors, (3341), 3216 states have internal predecessors, (3341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 3341 transitions. [2024-12-02 15:50:10,169 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 3341 transitions. Word has length 92 [2024-12-02 15:50:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:10,169 INFO L471 AbstractCegarLoop]: Abstraction has 3217 states and 3341 transitions. [2024-12-02 15:50:10,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 3341 transitions. [2024-12-02 15:50:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:50:10,171 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:10,172 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:10,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2024-12-02 15:50:10,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2024-12-02 15:50:10,372 INFO L396 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:10,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:10,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2093402315, now seen corresponding path program 151 times [2024-12-02 15:50:10,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:10,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078906754] [2024-12-02 15:50:10,372 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:50:10,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:50:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:50:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078906754] [2024-12-02 15:50:11,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078906754] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610799903] [2024-12-02 15:50:11,160 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:50:11,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:11,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:11,162 INFO L229 MonitoredProcess]: Starting monitored process 154 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:11,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2024-12-02 15:50:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:50:11,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-12-02 15:50:11,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:50:13,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 33 proven. 512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:50:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610799903] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:14,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:14,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 89 [2024-12-02 15:50:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741766896] [2024-12-02 15:50:14,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:14,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-12-02 15:50:14,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:14,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-12-02 15:50:14,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=7571, Unknown=0, NotChecked=0, Total=7832 [2024-12-02 15:50:14,557 INFO L87 Difference]: Start difference. First operand 3217 states and 3341 transitions. Second operand has 89 states, 89 states have (on average 2.348314606741573) internal successors, (209), 89 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:21,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:21,530 INFO L93 Difference]: Finished difference Result 3815 states and 3958 transitions. [2024-12-02 15:50:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-12-02 15:50:21,530 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.348314606741573) internal successors, (209), 89 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-12-02 15:50:21,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:21,534 INFO L225 Difference]: With dead ends: 3815 [2024-12-02 15:50:21,534 INFO L226 Difference]: Without dead ends: 3764 [2024-12-02 15:50:21,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 115 SyntacticMatches, 17 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4181 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=910, Invalid=17722, Unknown=0, NotChecked=0, Total=18632 [2024-12-02 15:50:21,535 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 18 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 5168 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 5215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:21,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1741 Invalid, 5215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 5168 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 15:50:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2024-12-02 15:50:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3454. [2024-12-02 15:50:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3453 states have (on average 1.038806834636548) internal successors, (3587), 3453 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 3587 transitions. [2024-12-02 15:50:23,028 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 3587 transitions. Word has length 92 [2024-12-02 15:50:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:23,028 INFO L471 AbstractCegarLoop]: Abstraction has 3454 states and 3587 transitions. [2024-12-02 15:50:23,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.348314606741573) internal successors, (209), 89 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 3587 transitions. [2024-12-02 15:50:23,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:50:23,030 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:23,031 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:23,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2024-12-02 15:50:23,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:23,231 INFO L396 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:23,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 645250165, now seen corresponding path program 152 times [2024-12-02 15:50:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:23,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008787757] [2024-12-02 15:50:23,231 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:50:23,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:23,251 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:50:23,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 33 proven. 512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:50:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008787757] [2024-12-02 15:50:24,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008787757] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063082294] [2024-12-02 15:50:24,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:50:24,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:24,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:24,134 INFO L229 MonitoredProcess]: Starting monitored process 155 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:24,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2024-12-02 15:50:24,282 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:50:24,282 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:24,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-12-02 15:50:24,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 33 proven. 512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:50:26,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 33 proven. 512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:50:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063082294] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:27,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:27,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 89 [2024-12-02 15:50:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698888695] [2024-12-02 15:50:27,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:27,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-12-02 15:50:27,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:27,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-12-02 15:50:27,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=7585, Unknown=0, NotChecked=0, Total=7832 [2024-12-02 15:50:27,746 INFO L87 Difference]: Start difference. First operand 3454 states and 3587 transitions. Second operand has 89 states, 89 states have (on average 2.348314606741573) internal successors, (209), 89 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:35,271 INFO L93 Difference]: Finished difference Result 4960 states and 5111 transitions. [2024-12-02 15:50:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 15:50:35,272 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.348314606741573) internal successors, (209), 89 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-12-02 15:50:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:35,277 INFO L225 Difference]: With dead ends: 4960 [2024-12-02 15:50:35,277 INFO L226 Difference]: Without dead ends: 4849 [2024-12-02 15:50:35,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 116 SyntacticMatches, 16 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1770, Invalid=16320, Unknown=0, NotChecked=0, Total=18090 [2024-12-02 15:50:35,278 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 131 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 2456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:35,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1154 Invalid, 2456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:50:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4849 states. [2024-12-02 15:50:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4849 to 3472. [2024-12-02 15:50:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 3471 states have (on average 1.0386055891673869) internal successors, (3605), 3471 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 3605 transitions. [2024-12-02 15:50:36,835 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 3605 transitions. Word has length 92 [2024-12-02 15:50:36,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:36,836 INFO L471 AbstractCegarLoop]: Abstraction has 3472 states and 3605 transitions. [2024-12-02 15:50:36,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.348314606741573) internal successors, (209), 89 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:36,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 3605 transitions. [2024-12-02 15:50:36,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:50:36,838 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:36,838 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:36,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2024-12-02 15:50:37,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,155 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:37,038 INFO L396 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:37,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1890636313, now seen corresponding path program 153 times [2024-12-02 15:50:37,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:37,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547361519] [2024-12-02 15:50:37,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:50:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:37,054 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-12-02 15:50:37,055 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:50:37,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:37,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547361519] [2024-12-02 15:50:37,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547361519] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:37,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464027691] [2024-12-02 15:50:37,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:50:37,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:37,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:37,553 INFO L229 MonitoredProcess]: Starting monitored process 156 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:37,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2024-12-02 15:50:37,699 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-12-02 15:50:37,699 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:37,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 15:50:37,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:50:38,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:50:38,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464027691] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:38,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:38,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 55 [2024-12-02 15:50:38,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947868875] [2024-12-02 15:50:38,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:38,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 15:50:38,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:38,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 15:50:38,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2809, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:50:38,703 INFO L87 Difference]: Start difference. First operand 3472 states and 3605 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 55 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:40,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:40,916 INFO L93 Difference]: Finished difference Result 3530 states and 3666 transitions. [2024-12-02 15:50:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:50:40,916 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 55 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 15:50:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:40,922 INFO L225 Difference]: With dead ends: 3530 [2024-12-02 15:50:40,922 INFO L226 Difference]: Without dead ends: 3524 [2024-12-02 15:50:40,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=256, Invalid=4574, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 15:50:40,923 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 53 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:40,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1516 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:50:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2024-12-02 15:50:42,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3501. [2024-12-02 15:50:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3500 states have (on average 1.038857142857143) internal successors, (3636), 3500 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 3636 transitions. [2024-12-02 15:50:42,503 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 3636 transitions. Word has length 94 [2024-12-02 15:50:42,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:42,504 INFO L471 AbstractCegarLoop]: Abstraction has 3501 states and 3636 transitions. [2024-12-02 15:50:42,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 55 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:42,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 3636 transitions. [2024-12-02 15:50:42,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:50:42,506 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:42,506 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:42,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2024-12-02 15:50:42,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:42,706 INFO L396 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:42,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:42,707 INFO L85 PathProgramCache]: Analyzing trace with hash 329043113, now seen corresponding path program 154 times [2024-12-02 15:50:42,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:42,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484979020] [2024-12-02 15:50:42,707 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:50:42,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:42,720 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:50:42,721 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:50:43,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484979020] [2024-12-02 15:50:43,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484979020] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083973243] [2024-12-02 15:50:43,335 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:50:43,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:43,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:43,336 INFO L229 MonitoredProcess]: Starting monitored process 157 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:43,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2024-12-02 15:50:43,483 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:50:43,483 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:43,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 15:50:43,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:50:44,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:50:44,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083973243] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:44,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:44,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 56 [2024-12-02 15:50:44,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731649796] [2024-12-02 15:50:44,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:44,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 15:50:44,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:44,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 15:50:44,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2923, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 15:50:44,454 INFO L87 Difference]: Start difference. First operand 3501 states and 3636 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:46,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:46,759 INFO L93 Difference]: Finished difference Result 3533 states and 3667 transitions. [2024-12-02 15:50:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:50:46,760 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 15:50:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:46,763 INFO L225 Difference]: With dead ends: 3533 [2024-12-02 15:50:46,763 INFO L226 Difference]: Without dead ends: 3465 [2024-12-02 15:50:46,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=253, Invalid=4859, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 15:50:46,764 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 62 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:46,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1927 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:50:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2024-12-02 15:50:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3464. [2024-12-02 15:50:48,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3464 states, 3463 states have (on average 1.0389835402829917) internal successors, (3598), 3463 states have internal predecessors, (3598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3464 states to 3464 states and 3598 transitions. [2024-12-02 15:50:48,316 INFO L78 Accepts]: Start accepts. Automaton has 3464 states and 3598 transitions. Word has length 94 [2024-12-02 15:50:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:48,316 INFO L471 AbstractCegarLoop]: Abstraction has 3464 states and 3598 transitions. [2024-12-02 15:50:48,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:48,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3464 states and 3598 transitions. [2024-12-02 15:50:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:50:48,318 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:48,318 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:48,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2024-12-02 15:50:48,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:48,519 INFO L396 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:48,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:48,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1027136711, now seen corresponding path program 155 times [2024-12-02 15:50:48,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:48,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826455945] [2024-12-02 15:50:48,519 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:50:48,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:48,536 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-12-02 15:50:48,536 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:50:49,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:49,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826455945] [2024-12-02 15:50:49,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826455945] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:49,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66837354] [2024-12-02 15:50:49,107 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:50:49,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:49,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:49,109 INFO L229 MonitoredProcess]: Starting monitored process 158 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:49,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2024-12-02 15:50:49,253 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-12-02 15:50:49,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:49,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 15:50:49,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:50:50,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:50:50,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66837354] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:50,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:50,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 58 [2024-12-02 15:50:50,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068984546] [2024-12-02 15:50:50,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:50,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 15:50:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:50,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 15:50:50,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3148, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 15:50:50,265 INFO L87 Difference]: Start difference. First operand 3464 states and 3598 transitions. Second operand has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 58 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:52,807 INFO L93 Difference]: Finished difference Result 3497 states and 3630 transitions. [2024-12-02 15:50:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:50:52,807 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 58 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 15:50:52,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:52,810 INFO L225 Difference]: With dead ends: 3497 [2024-12-02 15:50:52,810 INFO L226 Difference]: Without dead ends: 3431 [2024-12-02 15:50:52,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=255, Invalid=5295, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 15:50:52,811 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 86 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:52,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 2812 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:50:52,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2024-12-02 15:50:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3431. [2024-12-02 15:50:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3430 states have (on average 1.039067055393586) internal successors, (3564), 3430 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 3564 transitions. [2024-12-02 15:50:54,403 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 3564 transitions. Word has length 94 [2024-12-02 15:50:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:54,404 INFO L471 AbstractCegarLoop]: Abstraction has 3431 states and 3564 transitions. [2024-12-02 15:50:54,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 58 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 3564 transitions. [2024-12-02 15:50:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:50:54,406 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:54,406 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:54,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2024-12-02 15:50:54,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:54,607 INFO L396 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:54,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:54,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1648831031, now seen corresponding path program 156 times [2024-12-02 15:50:54,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:54,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221515175] [2024-12-02 15:50:54,607 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:50:54,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:54,628 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-12-02 15:50:54,628 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:50:55,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:55,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221515175] [2024-12-02 15:50:55,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221515175] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:50:55,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83517935] [2024-12-02 15:50:55,305 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:50:55,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:50:55,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:55,307 INFO L229 MonitoredProcess]: Starting monitored process 159 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:50:55,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2024-12-02 15:50:55,454 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-12-02 15:50:55,454 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:50:55,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-02 15:50:55,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:50:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:50:56,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:50:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:50:56,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83517935] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:50:56,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:50:56,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 61 [2024-12-02 15:50:56,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429267368] [2024-12-02 15:50:56,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:50:56,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 15:50:56,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:56,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 15:50:56,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3496, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 15:50:56,524 INFO L87 Difference]: Start difference. First operand 3431 states and 3564 transitions. Second operand has 61 states, 61 states have (on average 2.1311475409836067) internal successors, (130), 61 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:50:59,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:59,197 INFO L93 Difference]: Finished difference Result 3466 states and 3598 transitions. [2024-12-02 15:50:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:50:59,197 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.1311475409836067) internal successors, (130), 61 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 15:50:59,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:59,201 INFO L225 Difference]: With dead ends: 3466 [2024-12-02 15:50:59,201 INFO L226 Difference]: Without dead ends: 3402 [2024-12-02 15:50:59,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=262, Invalid=5900, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 15:50:59,201 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 113 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 3424 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:59,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 3424 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:50:59,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2024-12-02 15:51:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3402. [2024-12-02 15:51:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 1.0391061452513966) internal successors, (3534), 3401 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 3534 transitions. [2024-12-02 15:51:00,723 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 3534 transitions. Word has length 94 [2024-12-02 15:51:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:00,724 INFO L471 AbstractCegarLoop]: Abstraction has 3402 states and 3534 transitions. [2024-12-02 15:51:00,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.1311475409836067) internal successors, (130), 61 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 3534 transitions. [2024-12-02 15:51:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:51:00,726 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:00,726 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:00,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2024-12-02 15:51:00,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2024-12-02 15:51:00,926 INFO L396 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:00,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:00,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1313151911, now seen corresponding path program 157 times [2024-12-02 15:51:00,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:00,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877158064] [2024-12-02 15:51:00,927 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:51:00,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:51:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877158064] [2024-12-02 15:51:01,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877158064] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376696758] [2024-12-02 15:51:01,621 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:51:01,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:01,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:01,623 INFO L229 MonitoredProcess]: Starting monitored process 160 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:01,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2024-12-02 15:51:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:01,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-12-02 15:51:01,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:51:02,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:51:02,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376696758] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:02,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 63 [2024-12-02 15:51:02,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727212686] [2024-12-02 15:51:02,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:02,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 15:51:02,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:02,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 15:51:02,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3741, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 15:51:02,824 INFO L87 Difference]: Start difference. First operand 3402 states and 3534 transitions. Second operand has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 63 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:05,695 INFO L93 Difference]: Finished difference Result 3439 states and 3570 transitions. [2024-12-02 15:51:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:51:05,696 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 63 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 15:51:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:05,699 INFO L225 Difference]: With dead ends: 3439 [2024-12-02 15:51:05,699 INFO L226 Difference]: Without dead ends: 3377 [2024-12-02 15:51:05,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=264, Invalid=6378, Unknown=0, NotChecked=0, Total=6642 [2024-12-02 15:51:05,700 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 137 mSDsluCounter, 4331 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:05,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 4435 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:51:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2024-12-02 15:51:07,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3377. [2024-12-02 15:51:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3376 states have (on average 1.0390995260663507) internal successors, (3508), 3376 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 3508 transitions. [2024-12-02 15:51:07,192 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 3508 transitions. Word has length 94 [2024-12-02 15:51:07,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:07,192 INFO L471 AbstractCegarLoop]: Abstraction has 3377 states and 3508 transitions. [2024-12-02 15:51:07,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 63 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 3508 transitions. [2024-12-02 15:51:07,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:51:07,194 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:07,194 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:07,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2024-12-02 15:51:07,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2024-12-02 15:51:07,395 INFO L396 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:07,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:07,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1982443799, now seen corresponding path program 158 times [2024-12-02 15:51:07,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:07,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034998815] [2024-12-02 15:51:07,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:51:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:07,409 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:51:07,409 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 274 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:51:08,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034998815] [2024-12-02 15:51:08,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034998815] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419029516] [2024-12-02 15:51:08,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:51:08,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:08,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:08,194 INFO L229 MonitoredProcess]: Starting monitored process 161 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:08,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2024-12-02 15:51:08,348 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:51:08,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:08,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-12-02 15:51:08,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 274 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:51:09,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 274 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:51:09,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419029516] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:09,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:09,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 65 [2024-12-02 15:51:09,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364467913] [2024-12-02 15:51:09,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:09,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-12-02 15:51:09,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:09,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-12-02 15:51:09,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3994, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 15:51:09,514 INFO L87 Difference]: Start difference. First operand 3377 states and 3508 transitions. Second operand has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:12,526 INFO L93 Difference]: Finished difference Result 3416 states and 3546 transitions. [2024-12-02 15:51:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 15:51:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 15:51:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:12,530 INFO L225 Difference]: With dead ends: 3416 [2024-12-02 15:51:12,530 INFO L226 Difference]: Without dead ends: 3356 [2024-12-02 15:51:12,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=266, Invalid=6874, Unknown=0, NotChecked=0, Total=7140 [2024-12-02 15:51:12,531 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 161 mSDsluCounter, 4366 mSDsCounter, 0 mSdLazyCounter, 2710 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 4484 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:12,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 4484 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2710 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:51:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2024-12-02 15:51:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3356. [2024-12-02 15:51:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 3355 states have (on average 1.0390461997019373) internal successors, (3486), 3355 states have internal predecessors, (3486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 3486 transitions. [2024-12-02 15:51:14,026 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 3486 transitions. Word has length 94 [2024-12-02 15:51:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:14,026 INFO L471 AbstractCegarLoop]: Abstraction has 3356 states and 3486 transitions. [2024-12-02 15:51:14,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 3486 transitions. [2024-12-02 15:51:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:51:14,028 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:14,028 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:14,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2024-12-02 15:51:14,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2024-12-02 15:51:14,228 INFO L396 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:14,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:14,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1093397127, now seen corresponding path program 159 times [2024-12-02 15:51:14,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:14,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802310232] [2024-12-02 15:51:14,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:51:14,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:14,256 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-12-02 15:51:14,256 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 356 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:51:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802310232] [2024-12-02 15:51:15,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802310232] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669721812] [2024-12-02 15:51:15,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:51:15,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:15,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:15,077 INFO L229 MonitoredProcess]: Starting monitored process 162 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:15,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2024-12-02 15:51:15,221 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-12-02 15:51:15,221 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:15,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-12-02 15:51:15,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 356 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:51:16,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 356 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:51:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669721812] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:16,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 67 [2024-12-02 15:51:16,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158909576] [2024-12-02 15:51:16,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:16,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 15:51:16,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:16,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 15:51:16,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=4255, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 15:51:16,462 INFO L87 Difference]: Start difference. First operand 3356 states and 3486 transitions. Second operand has 67 states, 67 states have (on average 2.1194029850746268) internal successors, (142), 67 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:19,670 INFO L93 Difference]: Finished difference Result 3397 states and 3526 transitions. [2024-12-02 15:51:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:51:19,671 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1194029850746268) internal successors, (142), 67 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 15:51:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:19,675 INFO L225 Difference]: With dead ends: 3397 [2024-12-02 15:51:19,675 INFO L226 Difference]: Without dead ends: 3339 [2024-12-02 15:51:19,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=268, Invalid=7388, Unknown=0, NotChecked=0, Total=7656 [2024-12-02 15:51:19,676 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 185 mSDsluCounter, 5650 mSDsCounter, 0 mSdLazyCounter, 3442 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 5782 SdHoareTripleChecker+Invalid, 3443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:19,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 5782 Invalid, 3443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3442 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:51:19,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2024-12-02 15:51:21,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3339. [2024-12-02 15:51:21,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3339 states, 3338 states have (on average 1.0389454763331336) internal successors, (3468), 3338 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 3468 transitions. [2024-12-02 15:51:21,214 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 3468 transitions. Word has length 94 [2024-12-02 15:51:21,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:21,214 INFO L471 AbstractCegarLoop]: Abstraction has 3339 states and 3468 transitions. [2024-12-02 15:51:21,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.1194029850746268) internal successors, (142), 67 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:21,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 3468 transitions. [2024-12-02 15:51:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:51:21,216 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:21,216 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:21,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2024-12-02 15:51:21,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2024-12-02 15:51:21,417 INFO L396 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:21,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2026031095, now seen corresponding path program 160 times [2024-12-02 15:51:21,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:21,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089900425] [2024-12-02 15:51:21,417 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:51:21,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:21,432 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:51:21,432 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:51:22,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:22,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089900425] [2024-12-02 15:51:22,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089900425] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:22,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114945199] [2024-12-02 15:51:22,354 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:51:22,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:22,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:22,356 INFO L229 MonitoredProcess]: Starting monitored process 163 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:22,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2024-12-02 15:51:22,505 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:51:22,505 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:22,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-12-02 15:51:22,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:51:23,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:51:23,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114945199] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:23,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:23,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 68 [2024-12-02 15:51:23,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838952081] [2024-12-02 15:51:23,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:23,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 15:51:23,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:23,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 15:51:23,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=4393, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:51:23,676 INFO L87 Difference]: Start difference. First operand 3339 states and 3468 transitions. Second operand has 68 states, 68 states have (on average 2.073529411764706) internal successors, (141), 68 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:27,138 INFO L93 Difference]: Finished difference Result 3382 states and 3510 transitions. [2024-12-02 15:51:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 15:51:27,139 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.073529411764706) internal successors, (141), 68 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 15:51:27,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:27,142 INFO L225 Difference]: With dead ends: 3382 [2024-12-02 15:51:27,142 INFO L226 Difference]: Without dead ends: 3326 [2024-12-02 15:51:27,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=265, Invalid=7745, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 15:51:27,143 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 206 mSDsluCounter, 7046 mSDsCounter, 0 mSdLazyCounter, 4122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 7192 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:27,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 7192 Invalid, 4123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4122 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 15:51:27,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2024-12-02 15:51:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3326. [2024-12-02 15:51:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 1.038796992481203) internal successors, (3454), 3325 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 3454 transitions. [2024-12-02 15:51:28,663 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 3454 transitions. Word has length 94 [2024-12-02 15:51:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:28,663 INFO L471 AbstractCegarLoop]: Abstraction has 3326 states and 3454 transitions. [2024-12-02 15:51:28,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.073529411764706) internal successors, (141), 68 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 3454 transitions. [2024-12-02 15:51:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:51:28,665 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:28,665 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:28,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2024-12-02 15:51:28,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2024-12-02 15:51:28,865 INFO L396 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:28,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1197127321, now seen corresponding path program 161 times [2024-12-02 15:51:28,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:28,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95621463] [2024-12-02 15:51:28,866 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:51:28,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:28,890 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-12-02 15:51:28,891 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:51:29,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95621463] [2024-12-02 15:51:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95621463] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052664817] [2024-12-02 15:51:29,852 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:51:29,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:29,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:29,853 INFO L229 MonitoredProcess]: Starting monitored process 164 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:29,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2024-12-02 15:51:30,012 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-12-02 15:51:30,012 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:30,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-12-02 15:51:30,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:51:31,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:51:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052664817] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:31,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:31,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 70 [2024-12-02 15:51:31,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352379037] [2024-12-02 15:51:31,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:31,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-12-02 15:51:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:31,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-12-02 15:51:31,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=4666, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 15:51:31,182 INFO L87 Difference]: Start difference. First operand 3326 states and 3454 transitions. Second operand has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 70 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:34,756 INFO L93 Difference]: Finished difference Result 3528 states and 3666 transitions. [2024-12-02 15:51:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 15:51:34,757 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 70 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 15:51:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:34,760 INFO L225 Difference]: With dead ends: 3528 [2024-12-02 15:51:34,760 INFO L226 Difference]: Without dead ends: 3518 [2024-12-02 15:51:34,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=267, Invalid=8289, Unknown=0, NotChecked=0, Total=8556 [2024-12-02 15:51:34,761 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 247 mSDsluCounter, 7757 mSDsCounter, 0 mSdLazyCounter, 4514 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 7915 SdHoareTripleChecker+Invalid, 4515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:34,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 7915 Invalid, 4515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4514 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 15:51:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3518 states. [2024-12-02 15:51:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3518 to 3339. [2024-12-02 15:51:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3339 states, 3338 states have (on average 1.0389454763331336) internal successors, (3468), 3338 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 3468 transitions. [2024-12-02 15:51:36,279 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 3468 transitions. Word has length 94 [2024-12-02 15:51:36,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:36,279 INFO L471 AbstractCegarLoop]: Abstraction has 3339 states and 3468 transitions. [2024-12-02 15:51:36,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 70 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 3468 transitions. [2024-12-02 15:51:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 15:51:36,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:36,281 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:36,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2024-12-02 15:51:36,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,164 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:36,482 INFO L396 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:36,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1468384131, now seen corresponding path program 162 times [2024-12-02 15:51:36,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:36,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065056623] [2024-12-02 15:51:36,482 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:51:36,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:36,508 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-12-02 15:51:36,508 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:51:36,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:36,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065056623] [2024-12-02 15:51:36,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065056623] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:36,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514380874] [2024-12-02 15:51:36,729 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:51:36,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:36,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:36,731 INFO L229 MonitoredProcess]: Starting monitored process 165 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:36,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2024-12-02 15:51:36,891 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-12-02 15:51:36,891 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:36,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 15:51:36,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:51:37,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:51:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514380874] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:37,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:37,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2024-12-02 15:51:37,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779894083] [2024-12-02 15:51:37,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:37,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 15:51:37,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:37,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 15:51:37,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:51:37,248 INFO L87 Difference]: Start difference. First operand 3339 states and 3468 transitions. Second operand has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:40,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:40,054 INFO L93 Difference]: Finished difference Result 4202 states and 4401 transitions. [2024-12-02 15:51:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-12-02 15:51:40,055 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-12-02 15:51:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:40,058 INFO L225 Difference]: With dead ends: 4202 [2024-12-02 15:51:40,058 INFO L226 Difference]: Without dead ends: 3717 [2024-12-02 15:51:40,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 162 SyntacticMatches, 18 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1670 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1380, Invalid=4626, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 15:51:40,059 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 92 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:40,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 343 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:51:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2024-12-02 15:51:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 3716. [2024-12-02 15:51:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3716 states, 3715 states have (on average 1.0398384925975774) internal successors, (3863), 3715 states have internal predecessors, (3863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3716 states to 3716 states and 3863 transitions. [2024-12-02 15:51:41,778 INFO L78 Accepts]: Start accepts. Automaton has 3716 states and 3863 transitions. Word has length 96 [2024-12-02 15:51:41,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:41,778 INFO L471 AbstractCegarLoop]: Abstraction has 3716 states and 3863 transitions. [2024-12-02 15:51:41,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:41,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3716 states and 3863 transitions. [2024-12-02 15:51:41,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 15:51:41,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:41,780 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:41,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2024-12-02 15:51:41,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2024-12-02 15:51:41,981 INFO L396 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:41,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:41,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1449845181, now seen corresponding path program 163 times [2024-12-02 15:51:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:41,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261322255] [2024-12-02 15:51:41,981 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:51:41,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:51:42,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:42,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261322255] [2024-12-02 15:51:42,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261322255] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:42,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015398590] [2024-12-02 15:51:42,208 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:51:42,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:42,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:42,210 INFO L229 MonitoredProcess]: Starting monitored process 166 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:42,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2024-12-02 15:51:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:42,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 15:51:42,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:51:42,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-12-02 15:51:42,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015398590] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:42,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:42,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2024-12-02 15:51:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947445187] [2024-12-02 15:51:42,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:42,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 15:51:42,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:42,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 15:51:42,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:51:42,775 INFO L87 Difference]: Start difference. First operand 3716 states and 3863 transitions. Second operand has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:45,493 INFO L93 Difference]: Finished difference Result 3952 states and 4119 transitions. [2024-12-02 15:51:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-12-02 15:51:45,494 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-12-02 15:51:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:45,498 INFO L225 Difference]: With dead ends: 3952 [2024-12-02 15:51:45,498 INFO L226 Difference]: Without dead ends: 3921 [2024-12-02 15:51:45,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 162 SyntacticMatches, 18 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1670 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1380, Invalid=4626, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 15:51:45,499 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 113 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:45,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 299 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:51:45,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2024-12-02 15:51:47,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 3823. [2024-12-02 15:51:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 3822 states have (on average 1.043432757718472) internal successors, (3988), 3822 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 3988 transitions. [2024-12-02 15:51:47,244 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 3988 transitions. Word has length 96 [2024-12-02 15:51:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:47,244 INFO L471 AbstractCegarLoop]: Abstraction has 3823 states and 3988 transitions. [2024-12-02 15:51:47,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:51:47,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 3988 transitions. [2024-12-02 15:51:47,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 15:51:47,246 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:47,246 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:47,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2024-12-02 15:51:47,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2024-12-02 15:51:47,446 INFO L396 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:47,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1024870467, now seen corresponding path program 164 times [2024-12-02 15:51:47,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:47,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117238632] [2024-12-02 15:51:47,447 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:51:47,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:47,461 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:51:47,461 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:51:48,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:48,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117238632] [2024-12-02 15:51:48,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117238632] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:48,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999844604] [2024-12-02 15:51:48,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:51:48,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:48,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:48,353 INFO L229 MonitoredProcess]: Starting monitored process 167 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:48,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2024-12-02 15:51:48,510 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:51:48,511 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:51:48,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 15:51:48,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:51:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:51:50,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:51:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 35 proven. 578 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:51:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999844604] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:51:52,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:51:52,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 94 [2024-12-02 15:51:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596097439] [2024-12-02 15:51:52,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:51:52,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-12-02 15:51:52,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:52,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-12-02 15:51:52,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=8466, Unknown=0, NotChecked=0, Total=8742 [2024-12-02 15:51:52,343 INFO L87 Difference]: Start difference. First operand 3823 states and 3988 transitions. Second operand has 94 states, 94 states have (on average 2.3297872340425534) internal successors, (219), 94 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:00,679 INFO L93 Difference]: Finished difference Result 4503 states and 4690 transitions. [2024-12-02 15:52:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 15:52:00,679 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.3297872340425534) internal successors, (219), 94 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-12-02 15:52:00,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:00,683 INFO L225 Difference]: With dead ends: 4503 [2024-12-02 15:52:00,683 INFO L226 Difference]: Without dead ends: 4449 [2024-12-02 15:52:00,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 119 SyntacticMatches, 18 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4714 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=991, Invalid=19889, Unknown=0, NotChecked=0, Total=20880 [2024-12-02 15:52:00,684 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 5619 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 5669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 5619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:00,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1785 Invalid, 5669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 5619 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 15:52:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4449 states. [2024-12-02 15:52:02,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4449 to 4086. [2024-12-02 15:52:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4086 states, 4085 states have (on average 1.043329253365973) internal successors, (4262), 4085 states have internal predecessors, (4262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 4262 transitions. [2024-12-02 15:52:02,613 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 4262 transitions. Word has length 96 [2024-12-02 15:52:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:02,613 INFO L471 AbstractCegarLoop]: Abstraction has 4086 states and 4262 transitions. [2024-12-02 15:52:02,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.3297872340425534) internal successors, (219), 94 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 4262 transitions. [2024-12-02 15:52:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 15:52:02,616 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:02,616 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:02,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2024-12-02 15:52:02,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:02,816 INFO L396 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:02,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:02,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1994789635, now seen corresponding path program 165 times [2024-12-02 15:52:02,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:02,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217846584] [2024-12-02 15:52:02,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:52:02,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:02,843 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-12-02 15:52:02,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 35 proven. 578 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:52:03,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:03,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217846584] [2024-12-02 15:52:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217846584] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:03,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600286515] [2024-12-02 15:52:03,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:52:03,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:03,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:03,716 INFO L229 MonitoredProcess]: Starting monitored process 168 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:03,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2024-12-02 15:52:03,890 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-12-02 15:52:03,890 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:03,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 15:52:03,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 35 proven. 578 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:52:05,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:52:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 35 proven. 578 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:52:07,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600286515] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:52:07,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:52:07,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 94 [2024-12-02 15:52:07,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651499503] [2024-12-02 15:52:07,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:52:07,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-12-02 15:52:07,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:07,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-12-02 15:52:07,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=8466, Unknown=0, NotChecked=0, Total=8742 [2024-12-02 15:52:07,500 INFO L87 Difference]: Start difference. First operand 4086 states and 4262 transitions. Second operand has 94 states, 94 states have (on average 2.3297872340425534) internal successors, (219), 94 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:15,788 INFO L93 Difference]: Finished difference Result 6021 states and 6217 transitions. [2024-12-02 15:52:15,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-12-02 15:52:15,788 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.3297872340425534) internal successors, (219), 94 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-12-02 15:52:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:15,793 INFO L225 Difference]: With dead ends: 6021 [2024-12-02 15:52:15,793 INFO L226 Difference]: Without dead ends: 5903 [2024-12-02 15:52:15,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 120 SyntacticMatches, 17 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3913 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1988, Invalid=18318, Unknown=0, NotChecked=0, Total=20306 [2024-12-02 15:52:15,795 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 159 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:15,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1229 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 15:52:15,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2024-12-02 15:52:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 4106. [2024-12-02 15:52:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 4105 states have (on average 1.043118148599269) internal successors, (4282), 4105 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 4282 transitions. [2024-12-02 15:52:17,782 INFO L78 Accepts]: Start accepts. Automaton has 4106 states and 4282 transitions. Word has length 96 [2024-12-02 15:52:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:17,782 INFO L471 AbstractCegarLoop]: Abstraction has 4106 states and 4282 transitions. [2024-12-02 15:52:17,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.3297872340425534) internal successors, (219), 94 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4106 states and 4282 transitions. [2024-12-02 15:52:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:52:17,785 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:17,785 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:17,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2024-12-02 15:52:17,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:17,985 INFO L396 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:17,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:17,985 INFO L85 PathProgramCache]: Analyzing trace with hash -512829927, now seen corresponding path program 166 times [2024-12-02 15:52:17,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:17,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993560710] [2024-12-02 15:52:17,985 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:52:17,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:18,000 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:52:18,000 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-12-02 15:52:18,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:18,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993560710] [2024-12-02 15:52:18,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993560710] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:18,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053345562] [2024-12-02 15:52:18,349 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:52:18,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:18,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:18,350 INFO L229 MonitoredProcess]: Starting monitored process 169 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:18,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2024-12-02 15:52:18,502 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:52:18,502 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:18,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 15:52:18,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-12-02 15:52:19,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:52:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-12-02 15:52:19,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053345562] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:52:19,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:52:19,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 53 [2024-12-02 15:52:19,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146279458] [2024-12-02 15:52:19,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:52:19,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 15:52:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:19,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 15:52:19,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:52:19,769 INFO L87 Difference]: Start difference. First operand 4106 states and 4282 transitions. Second operand has 53 states, 53 states have (on average 2.339622641509434) internal successors, (124), 53 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:23,668 INFO L93 Difference]: Finished difference Result 4602 states and 4795 transitions. [2024-12-02 15:52:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 15:52:23,668 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.339622641509434) internal successors, (124), 53 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:52:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:23,673 INFO L225 Difference]: With dead ends: 4602 [2024-12-02 15:52:23,673 INFO L226 Difference]: Without dead ends: 4504 [2024-12-02 15:52:23,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 155 SyntacticMatches, 11 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=409, Invalid=5753, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 15:52:23,674 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:23,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1097 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:52:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2024-12-02 15:52:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 4463. [2024-12-02 15:52:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 4462 states have (on average 1.039444195428059) internal successors, (4638), 4462 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 4638 transitions. [2024-12-02 15:52:25,780 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 4638 transitions. Word has length 98 [2024-12-02 15:52:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:25,780 INFO L471 AbstractCegarLoop]: Abstraction has 4463 states and 4638 transitions. [2024-12-02 15:52:25,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.339622641509434) internal successors, (124), 53 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 4638 transitions. [2024-12-02 15:52:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:52:25,782 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:25,783 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:25,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2024-12-02 15:52:25,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:25,983 INFO L396 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:25,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1849884833, now seen corresponding path program 167 times [2024-12-02 15:52:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958205987] [2024-12-02 15:52:25,984 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:52:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:26,001 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:52:26,001 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:52:26,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:26,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958205987] [2024-12-02 15:52:26,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958205987] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:26,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117098022] [2024-12-02 15:52:26,592 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:52:26,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:26,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:26,594 INFO L229 MonitoredProcess]: Starting monitored process 170 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:26,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2024-12-02 15:52:26,756 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:52:26,756 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:26,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 15:52:26,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:52:27,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:52:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:52:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117098022] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:52:27,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:52:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 57 [2024-12-02 15:52:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949653106] [2024-12-02 15:52:27,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:52:27,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 15:52:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:27,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 15:52:27,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3029, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 15:52:27,860 INFO L87 Difference]: Start difference. First operand 4463 states and 4638 transitions. Second operand has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:30,777 INFO L93 Difference]: Finished difference Result 4550 states and 4728 transitions. [2024-12-02 15:52:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:52:30,778 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:52:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:30,782 INFO L225 Difference]: With dead ends: 4550 [2024-12-02 15:52:30,782 INFO L226 Difference]: Without dead ends: 4519 [2024-12-02 15:52:30,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=262, Invalid=4994, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 15:52:30,783 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 66 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:30,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 2298 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:52:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2024-12-02 15:52:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 4469. [2024-12-02 15:52:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.0396150402864817) internal successors, (4645), 4468 states have internal predecessors, (4645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 4645 transitions. [2024-12-02 15:52:32,889 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 4645 transitions. Word has length 98 [2024-12-02 15:52:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:32,889 INFO L471 AbstractCegarLoop]: Abstraction has 4469 states and 4645 transitions. [2024-12-02 15:52:32,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:32,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 4645 transitions. [2024-12-02 15:52:32,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:52:32,892 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:32,892 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:32,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2024-12-02 15:52:33,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:33,092 INFO L396 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:33,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash 644039833, now seen corresponding path program 168 times [2024-12-02 15:52:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:33,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039173638] [2024-12-02 15:52:33,092 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:52:33,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:33,110 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-12-02 15:52:33,110 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 19 proven. 163 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-12-02 15:52:33,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:33,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039173638] [2024-12-02 15:52:33,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039173638] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:33,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446178830] [2024-12-02 15:52:33,537 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:52:33,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:33,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:33,538 INFO L229 MonitoredProcess]: Starting monitored process 171 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:33,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2024-12-02 15:52:33,709 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-12-02 15:52:33,709 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:33,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 15:52:33,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-12-02 15:52:34,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:52:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-12-02 15:52:35,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446178830] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:52:35,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:52:35,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 55 [2024-12-02 15:52:35,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438701862] [2024-12-02 15:52:35,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:52:35,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 15:52:35,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:35,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 15:52:35,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2800, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 15:52:35,016 INFO L87 Difference]: Start difference. First operand 4469 states and 4645 transitions. Second operand has 55 states, 55 states have (on average 2.3454545454545452) internal successors, (129), 55 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:38,521 INFO L93 Difference]: Finished difference Result 4654 states and 4849 transitions. [2024-12-02 15:52:38,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 15:52:38,521 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.3454545454545452) internal successors, (129), 55 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:52:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:38,526 INFO L225 Difference]: With dead ends: 4654 [2024-12-02 15:52:38,526 INFO L226 Difference]: Without dead ends: 4430 [2024-12-02 15:52:38,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=678, Invalid=5642, Unknown=0, NotChecked=0, Total=6320 [2024-12-02 15:52:38,527 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:38,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 760 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:52:38,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2024-12-02 15:52:40,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4429. [2024-12-02 15:52:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 4428 states have (on average 1.0359078590785908) internal successors, (4587), 4428 states have internal predecessors, (4587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 4587 transitions. [2024-12-02 15:52:40,641 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 4587 transitions. Word has length 98 [2024-12-02 15:52:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:40,642 INFO L471 AbstractCegarLoop]: Abstraction has 4429 states and 4587 transitions. [2024-12-02 15:52:40,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.3454545454545452) internal successors, (129), 55 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 4587 transitions. [2024-12-02 15:52:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:52:40,644 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:40,644 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:40,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2024-12-02 15:52:40,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2024-12-02 15:52:40,845 INFO L396 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:40,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1046988081, now seen corresponding path program 169 times [2024-12-02 15:52:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920496349] [2024-12-02 15:52:40,845 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:52:40,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:52:41,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:41,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920496349] [2024-12-02 15:52:41,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920496349] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:41,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14002367] [2024-12-02 15:52:41,486 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:52:41,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:41,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:41,488 INFO L229 MonitoredProcess]: Starting monitored process 172 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:41,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2024-12-02 15:52:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:41,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 15:52:41,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:52:42,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:52:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:52:42,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14002367] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:52:42,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:52:42,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 60 [2024-12-02 15:52:42,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794190715] [2024-12-02 15:52:42,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:52:42,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 15:52:42,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:42,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 15:52:42,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=3371, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 15:52:42,771 INFO L87 Difference]: Start difference. First operand 4429 states and 4587 transitions. Second operand has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:45,853 INFO L93 Difference]: Finished difference Result 4463 states and 4620 transitions. [2024-12-02 15:52:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:52:45,854 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:52:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:45,858 INFO L225 Difference]: With dead ends: 4463 [2024-12-02 15:52:45,858 INFO L226 Difference]: Without dead ends: 4393 [2024-12-02 15:52:45,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=269, Invalid=5583, Unknown=0, NotChecked=0, Total=5852 [2024-12-02 15:52:45,859 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 77 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:45,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 2525 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:52:45,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2024-12-02 15:52:47,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 4392. [2024-12-02 15:52:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 1.0359826918697335) internal successors, (4549), 4391 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 4549 transitions. [2024-12-02 15:52:47,998 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 4549 transitions. Word has length 98 [2024-12-02 15:52:47,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:47,998 INFO L471 AbstractCegarLoop]: Abstraction has 4392 states and 4549 transitions. [2024-12-02 15:52:47,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 60 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 4549 transitions. [2024-12-02 15:52:48,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:52:48,001 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:48,001 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:48,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2024-12-02 15:52:48,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,172 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:48,202 INFO L396 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:48,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:48,202 INFO L85 PathProgramCache]: Analyzing trace with hash -588749375, now seen corresponding path program 170 times [2024-12-02 15:52:48,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:48,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49966982] [2024-12-02 15:52:48,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:52:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:48,218 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:52:48,218 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:52:48,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49966982] [2024-12-02 15:52:48,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49966982] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611861327] [2024-12-02 15:52:48,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:52:48,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:48,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:48,927 INFO L229 MonitoredProcess]: Starting monitored process 173 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:48,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2024-12-02 15:52:49,092 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:52:49,092 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:49,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-12-02 15:52:49,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:52:50,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:52:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:52:50,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611861327] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:52:50,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:52:50,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 62 [2024-12-02 15:52:50,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871231826] [2024-12-02 15:52:50,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:52:50,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-12-02 15:52:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:50,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-12-02 15:52:50,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3612, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 15:52:50,269 INFO L87 Difference]: Start difference. First operand 4392 states and 4549 transitions. Second operand has 62 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 62 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:53,674 INFO L93 Difference]: Finished difference Result 4427 states and 4583 transitions. [2024-12-02 15:52:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:52:53,674 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 62 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:52:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:53,679 INFO L225 Difference]: With dead ends: 4427 [2024-12-02 15:52:53,679 INFO L226 Difference]: Without dead ends: 4359 [2024-12-02 15:52:53,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=271, Invalid=6049, Unknown=0, NotChecked=0, Total=6320 [2024-12-02 15:52:53,680 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 98 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 3294 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:53,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 3294 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:52:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4359 states. [2024-12-02 15:52:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4359 to 4359. [2024-12-02 15:52:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 1.036025699862322) internal successors, (4515), 4358 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 4515 transitions. [2024-12-02 15:52:55,810 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 4515 transitions. Word has length 98 [2024-12-02 15:52:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:55,810 INFO L471 AbstractCegarLoop]: Abstraction has 4359 states and 4515 transitions. [2024-12-02 15:52:55,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 62 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:52:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 4515 transitions. [2024-12-02 15:52:55,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:52:55,813 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:55,813 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:55,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Ended with exit code 0 [2024-12-02 15:52:56,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2024-12-02 15:52:56,013 INFO L396 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:56,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2115116463, now seen corresponding path program 171 times [2024-12-02 15:52:56,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:56,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5634251] [2024-12-02 15:52:56,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:52:56,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:56,034 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:52:56,034 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:52:56,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:56,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5634251] [2024-12-02 15:52:56,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5634251] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:52:56,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511216194] [2024-12-02 15:52:56,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:52:56,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:52:56,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:52:56,780 INFO L229 MonitoredProcess]: Starting monitored process 174 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:52:56,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2024-12-02 15:52:56,934 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:52:56,934 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:52:56,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-12-02 15:52:56,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:52:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:52:57,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:52:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:52:58,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511216194] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:52:58,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:52:58,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 68 [2024-12-02 15:52:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806327346] [2024-12-02 15:52:58,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:52:58,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 15:52:58,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:58,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 15:52:58,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=4370, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:52:58,276 INFO L87 Difference]: Start difference. First operand 4359 states and 4515 transitions. Second operand has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 68 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:01,854 INFO L93 Difference]: Finished difference Result 4396 states and 4551 transitions. [2024-12-02 15:53:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:53:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 68 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:53:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:01,859 INFO L225 Difference]: With dead ends: 4396 [2024-12-02 15:53:01,859 INFO L226 Difference]: Without dead ends: 4330 [2024-12-02 15:53:01,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=288, Invalid=7194, Unknown=0, NotChecked=0, Total=7482 [2024-12-02 15:53:01,860 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 125 mSDsluCounter, 4135 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:01,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 4233 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:53:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2024-12-02 15:53:04,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 4330. [2024-12-02 15:53:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 4329 states have (on average 1.0360360360360361) internal successors, (4485), 4329 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 4485 transitions. [2024-12-02 15:53:04,009 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 4485 transitions. Word has length 98 [2024-12-02 15:53:04,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:04,009 INFO L471 AbstractCegarLoop]: Abstraction has 4330 states and 4485 transitions. [2024-12-02 15:53:04,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 68 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 4485 transitions. [2024-12-02 15:53:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:53:04,012 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:04,012 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:04,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2024-12-02 15:53:04,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2024-12-02 15:53:04,212 INFO L396 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:04,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 727792353, now seen corresponding path program 172 times [2024-12-02 15:53:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:04,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704043449] [2024-12-02 15:53:04,213 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:53:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:04,228 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:53:04,228 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:53:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704043449] [2024-12-02 15:53:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704043449] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156329237] [2024-12-02 15:53:05,010 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:53:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:05,012 INFO L229 MonitoredProcess]: Starting monitored process 175 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:05,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2024-12-02 15:53:05,165 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:53:05,165 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:05,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-12-02 15:53:05,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:53:06,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:53:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156329237] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:53:06,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:53:06,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 65 [2024-12-02 15:53:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513012631] [2024-12-02 15:53:06,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:53:06,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-12-02 15:53:06,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:06,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-12-02 15:53:06,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3993, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 15:53:06,325 INFO L87 Difference]: Start difference. First operand 4330 states and 4485 transitions. Second operand has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 65 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:09,889 INFO L93 Difference]: Finished difference Result 4369 states and 4523 transitions. [2024-12-02 15:53:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 15:53:09,889 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 65 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:53:09,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:09,894 INFO L225 Difference]: With dead ends: 4369 [2024-12-02 15:53:09,894 INFO L226 Difference]: Without dead ends: 4305 [2024-12-02 15:53:09,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=270, Invalid=6870, Unknown=0, NotChecked=0, Total=7140 [2024-12-02 15:53:09,895 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 146 mSDsluCounter, 4838 mSDsCounter, 0 mSdLazyCounter, 3010 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 4950 SdHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:09,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 4950 Invalid, 3011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3010 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:53:09,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2024-12-02 15:53:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 4305. [2024-12-02 15:53:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4305 states, 4304 states have (on average 1.0360130111524164) internal successors, (4459), 4304 states have internal predecessors, (4459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4305 states to 4305 states and 4459 transitions. [2024-12-02 15:53:11,951 INFO L78 Accepts]: Start accepts. Automaton has 4305 states and 4459 transitions. Word has length 98 [2024-12-02 15:53:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:11,952 INFO L471 AbstractCegarLoop]: Abstraction has 4305 states and 4459 transitions. [2024-12-02 15:53:11,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 65 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4305 states and 4459 transitions. [2024-12-02 15:53:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:53:11,954 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:11,954 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:11,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2024-12-02 15:53:12,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2024-12-02 15:53:12,155 INFO L396 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:12,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:12,155 INFO L85 PathProgramCache]: Analyzing trace with hash 753626993, now seen corresponding path program 173 times [2024-12-02 15:53:12,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:12,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998737981] [2024-12-02 15:53:12,155 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:53:12,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:12,176 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-12-02 15:53:12,176 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:53:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:13,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998737981] [2024-12-02 15:53:13,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998737981] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:13,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436963973] [2024-12-02 15:53:13,043 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:53:13,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:13,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:13,044 INFO L229 MonitoredProcess]: Starting monitored process 176 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:13,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2024-12-02 15:53:13,193 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-12-02 15:53:13,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:13,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-12-02 15:53:13,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:53:14,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:53:14,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436963973] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:53:14,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:53:14,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 67 [2024-12-02 15:53:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574235471] [2024-12-02 15:53:14,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:53:14,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 15:53:14,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:14,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 15:53:14,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=4254, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 15:53:14,466 INFO L87 Difference]: Start difference. First operand 4305 states and 4459 transitions. Second operand has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 67 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:18,179 INFO L93 Difference]: Finished difference Result 4346 states and 4499 transitions. [2024-12-02 15:53:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:53:18,179 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 67 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:53:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:18,184 INFO L225 Difference]: With dead ends: 4346 [2024-12-02 15:53:18,184 INFO L226 Difference]: Without dead ends: 4284 [2024-12-02 15:53:18,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=272, Invalid=7384, Unknown=0, NotChecked=0, Total=7656 [2024-12-02 15:53:18,185 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 170 mSDsluCounter, 5726 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 5852 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:18,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 5852 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:53:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2024-12-02 15:53:20,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 4284. [2024-12-02 15:53:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4283 states have (on average 1.0359561055335045) internal successors, (4437), 4283 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 4437 transitions. [2024-12-02 15:53:20,216 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 4437 transitions. Word has length 98 [2024-12-02 15:53:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:20,216 INFO L471 AbstractCegarLoop]: Abstraction has 4284 states and 4437 transitions. [2024-12-02 15:53:20,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 67 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 4437 transitions. [2024-12-02 15:53:20,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:53:20,219 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:20,219 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:20,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Ended with exit code 0 [2024-12-02 15:53:20,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,176 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:20,419 INFO L396 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:20,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1074429951, now seen corresponding path program 174 times [2024-12-02 15:53:20,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:20,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722101259] [2024-12-02 15:53:20,420 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:53:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:20,454 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-12-02 15:53:20,455 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:53:21,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:21,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722101259] [2024-12-02 15:53:21,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722101259] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:21,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228458575] [2024-12-02 15:53:21,355 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:53:21,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:21,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:21,357 INFO L229 MonitoredProcess]: Starting monitored process 177 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:21,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2024-12-02 15:53:21,527 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-12-02 15:53:21,527 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:21,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-12-02 15:53:21,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:53:22,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:53:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228458575] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:53:22,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:53:22,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 70 [2024-12-02 15:53:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642329370] [2024-12-02 15:53:22,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:53:22,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-12-02 15:53:22,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:22,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-12-02 15:53:22,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4656, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 15:53:22,749 INFO L87 Difference]: Start difference. First operand 4284 states and 4437 transitions. Second operand has 70 states, 70 states have (on average 2.1) internal successors, (147), 70 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:26,587 INFO L93 Difference]: Finished difference Result 4327 states and 4479 transitions. [2024-12-02 15:53:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 15:53:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 70 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:53:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:26,591 INFO L225 Difference]: With dead ends: 4327 [2024-12-02 15:53:26,592 INFO L226 Difference]: Without dead ends: 4267 [2024-12-02 15:53:26,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=279, Invalid=8093, Unknown=0, NotChecked=0, Total=8372 [2024-12-02 15:53:26,593 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 194 mSDsluCounter, 6111 mSDsCounter, 0 mSdLazyCounter, 3664 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:26,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 6251 Invalid, 3665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3664 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 15:53:26,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2024-12-02 15:53:28,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4267. [2024-12-02 15:53:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4266 states have (on average 1.0358649789029535) internal successors, (4419), 4266 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 4419 transitions. [2024-12-02 15:53:28,670 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 4419 transitions. Word has length 98 [2024-12-02 15:53:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:28,670 INFO L471 AbstractCegarLoop]: Abstraction has 4267 states and 4419 transitions. [2024-12-02 15:53:28,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 70 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 4419 transitions. [2024-12-02 15:53:28,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:53:28,673 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:28,673 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:28,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2024-12-02 15:53:28,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:28,874 INFO L396 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:28,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1817678703, now seen corresponding path program 175 times [2024-12-02 15:53:28,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730307798] [2024-12-02 15:53:28,874 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:53:28,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:53:29,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730307798] [2024-12-02 15:53:29,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730307798] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758404855] [2024-12-02 15:53:29,886 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:53:29,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:29,887 INFO L229 MonitoredProcess]: Starting monitored process 178 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:29,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2024-12-02 15:53:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:30,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-12-02 15:53:30,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:53:31,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:53:31,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758404855] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:53:31,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:53:31,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 72 [2024-12-02 15:53:31,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750480509] [2024-12-02 15:53:31,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:53:31,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-12-02 15:53:31,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:31,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-12-02 15:53:31,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4937, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 15:53:31,295 INFO L87 Difference]: Start difference. First operand 4267 states and 4419 transitions. Second operand has 72 states, 72 states have (on average 2.111111111111111) internal successors, (152), 72 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:35,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:35,493 INFO L93 Difference]: Finished difference Result 4312 states and 4463 transitions. [2024-12-02 15:53:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 15:53:35,493 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.111111111111111) internal successors, (152), 72 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:53:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:35,497 INFO L225 Difference]: With dead ends: 4312 [2024-12-02 15:53:35,498 INFO L226 Difference]: Without dead ends: 4254 [2024-12-02 15:53:35,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=281, Invalid=8649, Unknown=0, NotChecked=0, Total=8930 [2024-12-02 15:53:35,499 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 221 mSDsluCounter, 7312 mSDsCounter, 0 mSdLazyCounter, 4205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 7466 SdHoareTripleChecker+Invalid, 4206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:35,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 7466 Invalid, 4206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4205 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 15:53:35,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2024-12-02 15:53:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 4254. [2024-12-02 15:53:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4253 states have (on average 1.0357394780155185) internal successors, (4405), 4253 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 4405 transitions. [2024-12-02 15:53:37,589 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 4405 transitions. Word has length 98 [2024-12-02 15:53:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:37,589 INFO L471 AbstractCegarLoop]: Abstraction has 4254 states and 4405 transitions. [2024-12-02 15:53:37,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.111111111111111) internal successors, (152), 72 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 4405 transitions. [2024-12-02 15:53:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 15:53:37,592 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:37,592 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:37,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2024-12-02 15:53:37,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:37,793 INFO L396 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:37,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:37,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1559049505, now seen corresponding path program 176 times [2024-12-02 15:53:37,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:37,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566258282] [2024-12-02 15:53:37,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:53:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:37,807 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:53:37,807 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:53:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566258282] [2024-12-02 15:53:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566258282] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196382817] [2024-12-02 15:53:38,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:53:38,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:38,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:38,811 INFO L229 MonitoredProcess]: Starting monitored process 179 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:38,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2024-12-02 15:53:38,975 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:53:38,975 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:38,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-12-02 15:53:38,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:53:40,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:53:40,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196382817] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:53:40,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:53:40,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 74 [2024-12-02 15:53:40,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482489385] [2024-12-02 15:53:40,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:53:40,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-12-02 15:53:40,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:40,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-12-02 15:53:40,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=5226, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 15:53:40,287 INFO L87 Difference]: Start difference. First operand 4254 states and 4405 transitions. Second operand has 74 states, 74 states have (on average 2.081081081081081) internal successors, (154), 74 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:44,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:44,645 INFO L93 Difference]: Finished difference Result 4483 states and 4645 transitions. [2024-12-02 15:53:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 15:53:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.081081081081081) internal successors, (154), 74 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-12-02 15:53:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:44,650 INFO L225 Difference]: With dead ends: 4483 [2024-12-02 15:53:44,650 INFO L226 Difference]: Without dead ends: 4473 [2024-12-02 15:53:44,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=283, Invalid=9223, Unknown=0, NotChecked=0, Total=9506 [2024-12-02 15:53:44,651 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 265 mSDsluCounter, 8150 mSDsCounter, 0 mSdLazyCounter, 4752 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 8316 SdHoareTripleChecker+Invalid, 4753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:44,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 8316 Invalid, 4753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4752 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 15:53:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4473 states. [2024-12-02 15:53:46,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 4267. [2024-12-02 15:53:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4266 states have (on average 1.0358649789029535) internal successors, (4419), 4266 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 4419 transitions. [2024-12-02 15:53:46,770 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 4419 transitions. Word has length 98 [2024-12-02 15:53:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:46,770 INFO L471 AbstractCegarLoop]: Abstraction has 4267 states and 4419 transitions. [2024-12-02 15:53:46,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.081081081081081) internal successors, (154), 74 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:46,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 4419 transitions. [2024-12-02 15:53:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 15:53:46,773 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:46,773 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:46,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Ended with exit code 0 [2024-12-02 15:53:46,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:46,973 INFO L396 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:46,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:46,974 INFO L85 PathProgramCache]: Analyzing trace with hash 388579317, now seen corresponding path program 177 times [2024-12-02 15:53:46,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:46,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874203503] [2024-12-02 15:53:46,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:53:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:47,003 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-12-02 15:53:47,003 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:53:47,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:47,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874203503] [2024-12-02 15:53:47,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874203503] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:47,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126468103] [2024-12-02 15:53:47,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:53:47,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:47,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:47,250 INFO L229 MonitoredProcess]: Starting monitored process 180 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:47,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2024-12-02 15:53:47,421 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-12-02 15:53:47,421 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:47,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:53:47,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:53:47,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:53:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126468103] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:53:47,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:53:47,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-12-02 15:53:47,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942009179] [2024-12-02 15:53:47,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:53:47,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 15:53:47,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:47,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 15:53:47,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=781, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 15:53:47,843 INFO L87 Difference]: Start difference. First operand 4267 states and 4419 transitions. Second operand has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:51,000 INFO L93 Difference]: Finished difference Result 4393 states and 4545 transitions. [2024-12-02 15:53:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-12-02 15:53:51,001 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-12-02 15:53:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:51,006 INFO L225 Difference]: With dead ends: 4393 [2024-12-02 15:53:51,006 INFO L226 Difference]: Without dead ends: 4387 [2024-12-02 15:53:51,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 168 SyntacticMatches, 20 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2183, Invalid=4297, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 15:53:51,007 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 231 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:51,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 587 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:53:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2024-12-02 15:53:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 4211. [2024-12-02 15:53:53,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 4210 states have (on average 1.0353919239904987) internal successors, (4359), 4210 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 4359 transitions. [2024-12-02 15:53:53,040 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 4359 transitions. Word has length 100 [2024-12-02 15:53:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:53,040 INFO L471 AbstractCegarLoop]: Abstraction has 4211 states and 4359 transitions. [2024-12-02 15:53:53,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 4359 transitions. [2024-12-02 15:53:53,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 15:53:53,043 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:53,043 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:53,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Ended with exit code 0 [2024-12-02 15:53:53,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:53,243 INFO L396 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:53,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:53,243 INFO L85 PathProgramCache]: Analyzing trace with hash -191371467, now seen corresponding path program 178 times [2024-12-02 15:53:53,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:53,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070035026] [2024-12-02 15:53:53,243 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:53:53,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:53,257 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:53:53,257 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:53:53,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:53,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070035026] [2024-12-02 15:53:53,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070035026] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:53,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783331551] [2024-12-02 15:53:53,501 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:53:53,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:53,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:53,503 INFO L229 MonitoredProcess]: Starting monitored process 181 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:53,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2024-12-02 15:53:53,669 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:53:53,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:53:53,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:53:53,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:53:53,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:53:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:53:54,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783331551] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:53:54,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:53:54,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 33 [2024-12-02 15:53:54,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912224788] [2024-12-02 15:53:54,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:53:54,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 15:53:54,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:54,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 15:53:54,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=683, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:53:54,058 INFO L87 Difference]: Start difference. First operand 4211 states and 4359 transitions. Second operand has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:57,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:57,161 INFO L93 Difference]: Finished difference Result 4780 states and 4965 transitions. [2024-12-02 15:53:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-12-02 15:53:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-12-02 15:53:57,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:57,166 INFO L225 Difference]: With dead ends: 4780 [2024-12-02 15:53:57,166 INFO L226 Difference]: Without dead ends: 4266 [2024-12-02 15:53:57,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 169 SyntacticMatches, 21 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2349 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2101, Invalid=4061, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 15:53:57,167 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 230 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:57,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 390 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:53:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2024-12-02 15:53:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4247. [2024-12-02 15:53:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 4246 states have (on average 1.0350918511540272) internal successors, (4395), 4246 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 4395 transitions. [2024-12-02 15:53:59,503 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 4395 transitions. Word has length 100 [2024-12-02 15:53:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:59,503 INFO L471 AbstractCegarLoop]: Abstraction has 4247 states and 4395 transitions. [2024-12-02 15:53:59,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 33 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:53:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 4395 transitions. [2024-12-02 15:53:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 15:53:59,506 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:59,506 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:59,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Ended with exit code 0 [2024-12-02 15:53:59,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:59,707 INFO L396 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:59,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1995504571, now seen corresponding path program 179 times [2024-12-02 15:53:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:59,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118092566] [2024-12-02 15:53:59,707 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:53:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:59,734 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-12-02 15:53:59,734 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 685 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:54:00,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:00,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118092566] [2024-12-02 15:54:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118092566] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:00,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915624165] [2024-12-02 15:54:00,689 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:54:00,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:00,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:00,690 INFO L229 MonitoredProcess]: Starting monitored process 182 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:00,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2024-12-02 15:54:00,853 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-12-02 15:54:00,853 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:00,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 15:54:00,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 685 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:54:03,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:54:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 37 proven. 648 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:54:04,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915624165] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:54:04,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:54:04,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 98 [2024-12-02 15:54:04,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835623627] [2024-12-02 15:54:04,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:54:04,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-12-02 15:54:04,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:04,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-12-02 15:54:04,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=9218, Unknown=0, NotChecked=0, Total=9506 [2024-12-02 15:54:04,839 INFO L87 Difference]: Start difference. First operand 4247 states and 4395 transitions. Second operand has 98 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 98 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:14,269 INFO L93 Difference]: Finished difference Result 4972 states and 5141 transitions. [2024-12-02 15:54:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-12-02 15:54:14,270 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 98 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-12-02 15:54:14,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:14,274 INFO L225 Difference]: With dead ends: 4972 [2024-12-02 15:54:14,274 INFO L226 Difference]: Without dead ends: 4916 [2024-12-02 15:54:14,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 123 SyntacticMatches, 20 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5336 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1048, Invalid=21602, Unknown=0, NotChecked=0, Total=22650 [2024-12-02 15:54:14,275 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 6763 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 6798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 6763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:14,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1985 Invalid, 6798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 6763 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 15:54:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4916 states. [2024-12-02 15:54:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4916 to 4533. [2024-12-02 15:54:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4533 states, 4532 states have (on average 1.0350838481906444) internal successors, (4691), 4532 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4533 states to 4533 states and 4691 transitions. [2024-12-02 15:54:16,744 INFO L78 Accepts]: Start accepts. Automaton has 4533 states and 4691 transitions. Word has length 100 [2024-12-02 15:54:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:16,744 INFO L471 AbstractCegarLoop]: Abstraction has 4533 states and 4691 transitions. [2024-12-02 15:54:16,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 98 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4533 states and 4691 transitions. [2024-12-02 15:54:16,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 15:54:16,747 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:16,747 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:16,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Ended with exit code 0 [2024-12-02 15:54:16,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2024-12-02 15:54:16,947 INFO L396 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:16,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2079921787, now seen corresponding path program 180 times [2024-12-02 15:54:16,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:16,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42500832] [2024-12-02 15:54:16,948 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:54:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:16,978 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-12-02 15:54:16,978 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 37 proven. 648 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:54:18,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:18,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42500832] [2024-12-02 15:54:18,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42500832] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:18,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131059005] [2024-12-02 15:54:18,008 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:54:18,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:18,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:18,010 INFO L229 MonitoredProcess]: Starting monitored process 183 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:18,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2024-12-02 15:54:18,188 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-12-02 15:54:18,189 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:18,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 15:54:18,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 37 proven. 648 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:54:20,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:54:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 37 proven. 648 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:54:22,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131059005] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:54:22,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:54:22,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 99 [2024-12-02 15:54:22,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571734018] [2024-12-02 15:54:22,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:54:22,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-12-02 15:54:22,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:22,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-12-02 15:54:22,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=9410, Unknown=0, NotChecked=0, Total=9702 [2024-12-02 15:54:22,252 INFO L87 Difference]: Start difference. First operand 4533 states and 4691 transitions. Second operand has 99 states, 99 states have (on average 2.313131313131313) internal successors, (229), 99 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:32,353 INFO L93 Difference]: Finished difference Result 6632 states and 6810 transitions. [2024-12-02 15:54:32,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-12-02 15:54:32,353 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.313131313131313) internal successors, (229), 99 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-12-02 15:54:32,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:32,360 INFO L225 Difference]: With dead ends: 6632 [2024-12-02 15:54:32,360 INFO L226 Difference]: Without dead ends: 6510 [2024-12-02 15:54:32,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 124 SyntacticMatches, 18 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3676 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2204, Invalid=20446, Unknown=0, NotChecked=0, Total=22650 [2024-12-02 15:54:32,362 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 118 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:32,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1218 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 15:54:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2024-12-02 15:54:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 4553. [2024-12-02 15:54:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 1.0349297012302285) internal successors, (4711), 4552 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 4711 transitions. [2024-12-02 15:54:34,754 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 4711 transitions. Word has length 100 [2024-12-02 15:54:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:34,754 INFO L471 AbstractCegarLoop]: Abstraction has 4553 states and 4711 transitions. [2024-12-02 15:54:34,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.313131313131313) internal successors, (229), 99 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 4711 transitions. [2024-12-02 15:54:34,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:54:34,757 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:34,757 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:34,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Ended with exit code 0 [2024-12-02 15:54:34,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2024-12-02 15:54:34,957 INFO L396 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:34,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:34,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1082083481, now seen corresponding path program 181 times [2024-12-02 15:54:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:34,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328904072] [2024-12-02 15:54:34,958 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:54:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-12-02 15:54:35,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:35,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328904072] [2024-12-02 15:54:35,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328904072] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:35,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100429860] [2024-12-02 15:54:35,492 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:54:35,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:35,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:35,494 INFO L229 MonitoredProcess]: Starting monitored process 184 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:35,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2024-12-02 15:54:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:35,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 15:54:35,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-12-02 15:54:36,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:54:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-12-02 15:54:36,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100429860] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:54:36,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:54:36,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 59 [2024-12-02 15:54:36,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814652026] [2024-12-02 15:54:36,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:54:36,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-12-02 15:54:36,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:36,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-12-02 15:54:36,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=3248, Unknown=0, NotChecked=0, Total=3422 [2024-12-02 15:54:36,905 INFO L87 Difference]: Start difference. First operand 4553 states and 4711 transitions. Second operand has 59 states, 59 states have (on average 2.135593220338983) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:39,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:39,993 INFO L93 Difference]: Finished difference Result 4615 states and 4776 transitions. [2024-12-02 15:54:39,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:54:39,993 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.135593220338983) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:54:39,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:39,999 INFO L225 Difference]: With dead ends: 4615 [2024-12-02 15:54:39,999 INFO L226 Difference]: Without dead ends: 4609 [2024-12-02 15:54:40,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=276, Invalid=5274, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 15:54:40,000 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 43 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:40,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1695 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:54:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4609 states. [2024-12-02 15:54:42,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4609 to 4584. [2024-12-02 15:54:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4584 states, 4583 states have (on average 1.0351298276238272) internal successors, (4744), 4583 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 4744 transitions. [2024-12-02 15:54:42,333 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 4744 transitions. Word has length 102 [2024-12-02 15:54:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:42,334 INFO L471 AbstractCegarLoop]: Abstraction has 4584 states and 4744 transitions. [2024-12-02 15:54:42,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.135593220338983) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 4744 transitions. [2024-12-02 15:54:42,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:54:42,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:42,336 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:42,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2024-12-02 15:54:42,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2024-12-02 15:54:42,536 INFO L396 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:42,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1502804777, now seen corresponding path program 182 times [2024-12-02 15:54:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:42,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558565946] [2024-12-02 15:54:42,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:54:42,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:42,550 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:54:42,550 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:54:43,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558565946] [2024-12-02 15:54:43,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558565946] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990592790] [2024-12-02 15:54:43,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:54:43,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:43,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:43,150 INFO L229 MonitoredProcess]: Starting monitored process 185 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:43,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2024-12-02 15:54:43,323 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:54:43,323 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:43,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 15:54:43,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:54:44,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:54:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-12-02 15:54:44,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990592790] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:54:44,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:54:44,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 61 [2024-12-02 15:54:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510483060] [2024-12-02 15:54:44,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:54:44,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 15:54:44,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:44,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 15:54:44,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=3485, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 15:54:44,526 INFO L87 Difference]: Start difference. First operand 4584 states and 4744 transitions. Second operand has 61 states, 61 states have (on average 2.1311475409836067) internal successors, (130), 61 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:47,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:47,837 INFO L93 Difference]: Finished difference Result 4618 states and 4777 transitions. [2024-12-02 15:54:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:54:47,838 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.1311475409836067) internal successors, (130), 61 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:54:47,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:47,842 INFO L225 Difference]: With dead ends: 4618 [2024-12-02 15:54:47,843 INFO L226 Difference]: Without dead ends: 4544 [2024-12-02 15:54:47,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=278, Invalid=5728, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 15:54:47,843 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 62 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:47,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2468 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:54:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2024-12-02 15:54:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4543. [2024-12-02 15:54:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4543 states, 4542 states have (on average 1.0352267723469837) internal successors, (4702), 4542 states have internal predecessors, (4702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 4702 transitions. [2024-12-02 15:54:50,128 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 4702 transitions. Word has length 102 [2024-12-02 15:54:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:50,128 INFO L471 AbstractCegarLoop]: Abstraction has 4543 states and 4702 transitions. [2024-12-02 15:54:50,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.1311475409836067) internal successors, (130), 61 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 4702 transitions. [2024-12-02 15:54:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:54:50,131 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:50,131 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:50,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2024-12-02 15:54:50,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,185 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:50,332 INFO L396 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:50,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash -428406343, now seen corresponding path program 183 times [2024-12-02 15:54:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:50,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763962017] [2024-12-02 15:54:50,332 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:54:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:50,350 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:54:50,350 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:54:51,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:51,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763962017] [2024-12-02 15:54:51,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763962017] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:51,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830126821] [2024-12-02 15:54:51,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:54:51,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:51,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:51,040 INFO L229 MonitoredProcess]: Starting monitored process 186 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:51,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2024-12-02 15:54:51,216 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-12-02 15:54:51,216 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:51,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-02 15:54:51,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:54:52,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:54:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 15:54:52,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830126821] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:54:52,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:54:52,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 63 [2024-12-02 15:54:52,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572153706] [2024-12-02 15:54:52,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:54:52,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 15:54:52,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:54:52,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 15:54:52,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3730, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 15:54:52,446 INFO L87 Difference]: Start difference. First operand 4543 states and 4702 transitions. Second operand has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 63 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:55,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:54:55,993 INFO L93 Difference]: Finished difference Result 4578 states and 4736 transitions. [2024-12-02 15:54:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:54:55,994 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 63 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:54:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:54:55,998 INFO L225 Difference]: With dead ends: 4578 [2024-12-02 15:54:55,999 INFO L226 Difference]: Without dead ends: 4506 [2024-12-02 15:54:55,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=280, Invalid=6200, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 15:54:56,000 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 89 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:54:56,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 3083 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:54:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2024-12-02 15:54:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4506. [2024-12-02 15:54:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4505 states have (on average 1.035294117647059) internal successors, (4664), 4505 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:58,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 4664 transitions. [2024-12-02 15:54:58,351 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 4664 transitions. Word has length 102 [2024-12-02 15:54:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:54:58,351 INFO L471 AbstractCegarLoop]: Abstraction has 4506 states and 4664 transitions. [2024-12-02 15:54:58,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.126984126984127) internal successors, (134), 63 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:54:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 4664 transitions. [2024-12-02 15:54:58,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:54:58,353 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:54:58,353 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:54:58,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Ended with exit code 0 [2024-12-02 15:54:58,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:58,554 INFO L396 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:54:58,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:54:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1842056119, now seen corresponding path program 184 times [2024-12-02 15:54:58,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:54:58,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898506084] [2024-12-02 15:54:58,554 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:54:58,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:58,580 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:54:58,581 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:54:59,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:59,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898506084] [2024-12-02 15:54:59,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898506084] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:59,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715349723] [2024-12-02 15:54:59,356 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:54:59,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:59,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:59,357 INFO L229 MonitoredProcess]: Starting monitored process 187 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:59,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2024-12-02 15:54:59,547 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:54:59,547 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:54:59,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-12-02 15:54:59,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:55:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:55:00,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:55:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-12-02 15:55:00,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715349723] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:55:00,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:55:00,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 64 [2024-12-02 15:55:00,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616926884] [2024-12-02 15:55:00,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:55:00,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 15:55:00,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:00,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 15:55:00,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3860, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:55:00,730 INFO L87 Difference]: Start difference. First operand 4506 states and 4664 transitions. Second operand has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:04,374 INFO L93 Difference]: Finished difference Result 4543 states and 4700 transitions. [2024-12-02 15:55:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:55:04,374 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:55:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:04,380 INFO L225 Difference]: With dead ends: 4543 [2024-12-02 15:55:04,380 INFO L226 Difference]: Without dead ends: 4473 [2024-12-02 15:55:04,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=277, Invalid=6529, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 15:55:04,381 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 110 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:04,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 3669 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:55:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4473 states. [2024-12-02 15:55:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 4473. [2024-12-02 15:55:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4473 states, 4472 states have (on average 1.0353309481216457) internal successors, (4630), 4472 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 4630 transitions. [2024-12-02 15:55:06,737 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 4630 transitions. Word has length 102 [2024-12-02 15:55:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:55:06,737 INFO L471 AbstractCegarLoop]: Abstraction has 4473 states and 4630 transitions. [2024-12-02 15:55:06,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:06,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 4630 transitions. [2024-12-02 15:55:06,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:55:06,740 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:55:06,740 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:55:06,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Ended with exit code 0 [2024-12-02 15:55:06,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 187 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2024-12-02 15:55:06,941 INFO L396 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:55:06,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:55:06,941 INFO L85 PathProgramCache]: Analyzing trace with hash 362035929, now seen corresponding path program 185 times [2024-12-02 15:55:06,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:55:06,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759884846] [2024-12-02 15:55:06,941 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:55:06,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:55:06,961 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:55:06,961 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:55:07,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:55:07,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759884846] [2024-12-02 15:55:07,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759884846] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:55:07,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613891574] [2024-12-02 15:55:07,738 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:55:07,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:07,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:55:07,739 INFO L229 MonitoredProcess]: Starting monitored process 188 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:55:07,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2024-12-02 15:55:07,919 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-12-02 15:55:07,919 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:07,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-12-02 15:55:07,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:55:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:55:09,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:55:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:55:09,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613891574] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:55:09,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:55:09,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 66 [2024-12-02 15:55:09,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88244810] [2024-12-02 15:55:09,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:55:09,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 15:55:09,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:09,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 15:55:09,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=4117, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 15:55:09,212 INFO L87 Difference]: Start difference. First operand 4473 states and 4630 transitions. Second operand has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 66 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:13,028 INFO L93 Difference]: Finished difference Result 4512 states and 4668 transitions. [2024-12-02 15:55:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 15:55:13,028 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 66 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:55:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:13,033 INFO L225 Difference]: With dead ends: 4512 [2024-12-02 15:55:13,033 INFO L226 Difference]: Without dead ends: 4444 [2024-12-02 15:55:13,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=7031, Unknown=0, NotChecked=0, Total=7310 [2024-12-02 15:55:13,034 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 134 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 2772 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:13,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 4399 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2772 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:55:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2024-12-02 15:55:15,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4444. [2024-12-02 15:55:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4444 states, 4443 states have (on average 1.0353364843574162) internal successors, (4600), 4443 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 4600 transitions. [2024-12-02 15:55:15,346 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 4600 transitions. Word has length 102 [2024-12-02 15:55:15,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:55:15,346 INFO L471 AbstractCegarLoop]: Abstraction has 4444 states and 4600 transitions. [2024-12-02 15:55:15,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 66 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:15,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 4600 transitions. [2024-12-02 15:55:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:55:15,349 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:55:15,349 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:55:15,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Ended with exit code 0 [2024-12-02 15:55:15,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2024-12-02 15:55:15,549 INFO L396 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:55:15,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:55:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash -954245783, now seen corresponding path program 186 times [2024-12-02 15:55:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:55:15,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387069136] [2024-12-02 15:55:15,550 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:55:15,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:55:15,571 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 15:55:15,572 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:55:16,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:55:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387069136] [2024-12-02 15:55:16,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387069136] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:55:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572310368] [2024-12-02 15:55:16,538 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:55:16,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:55:16,540 INFO L229 MonitoredProcess]: Starting monitored process 189 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:55:16,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2024-12-02 15:55:16,718 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 15:55:16,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:16,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-12-02 15:55:16,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:55:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:55:17,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:55:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:55:18,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572310368] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:55:18,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:55:18,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 69 [2024-12-02 15:55:18,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265047325] [2024-12-02 15:55:18,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:55:18,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 15:55:18,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:18,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 15:55:18,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=4513, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 15:55:18,033 INFO L87 Difference]: Start difference. First operand 4444 states and 4600 transitions. Second operand has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 69 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:21,918 INFO L93 Difference]: Finished difference Result 4485 states and 4640 transitions. [2024-12-02 15:55:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:55:21,918 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 69 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:55:21,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:21,923 INFO L225 Difference]: With dead ends: 4485 [2024-12-02 15:55:21,923 INFO L226 Difference]: Without dead ends: 4419 [2024-12-02 15:55:21,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=286, Invalid=7724, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 15:55:21,924 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 161 mSDsluCounter, 5442 mSDsCounter, 0 mSdLazyCounter, 3402 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 5562 SdHoareTripleChecker+Invalid, 3403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:21,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 5562 Invalid, 3403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3402 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:55:21,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2024-12-02 15:55:24,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 4419. [2024-12-02 15:55:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 4418 states have (on average 1.0353100950656406) internal successors, (4574), 4418 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 4574 transitions. [2024-12-02 15:55:24,207 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 4574 transitions. Word has length 102 [2024-12-02 15:55:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:55:24,208 INFO L471 AbstractCegarLoop]: Abstraction has 4419 states and 4574 transitions. [2024-12-02 15:55:24,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 69 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 4574 transitions. [2024-12-02 15:55:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:55:24,210 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:55:24,210 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:55:24,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Ended with exit code 0 [2024-12-02 15:55:24,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,189 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:24,411 INFO L396 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:55:24,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:55:24,411 INFO L85 PathProgramCache]: Analyzing trace with hash 723442681, now seen corresponding path program 187 times [2024-12-02 15:55:24,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:55:24,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416105569] [2024-12-02 15:55:24,411 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:55:24,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:55:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:55:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:55:25,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:55:25,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416105569] [2024-12-02 15:55:25,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416105569] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:55:25,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789949347] [2024-12-02 15:55:25,381 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:55:25,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:25,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:55:25,383 INFO L229 MonitoredProcess]: Starting monitored process 190 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:55:25,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2024-12-02 15:55:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:55:25,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-12-02 15:55:25,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:55:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:55:26,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:55:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 15:55:26,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789949347] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:55:26,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:55:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 71 [2024-12-02 15:55:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83743353] [2024-12-02 15:55:26,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:55:26,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-12-02 15:55:26,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:26,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-12-02 15:55:26,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=4790, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 15:55:26,889 INFO L87 Difference]: Start difference. First operand 4419 states and 4574 transitions. Second operand has 71 states, 71 states have (on average 2.112676056338028) internal successors, (150), 71 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:31,186 INFO L93 Difference]: Finished difference Result 4462 states and 4616 transitions. [2024-12-02 15:55:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 15:55:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.112676056338028) internal successors, (150), 71 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:55:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:31,191 INFO L225 Difference]: With dead ends: 4462 [2024-12-02 15:55:31,191 INFO L226 Difference]: Without dead ends: 4398 [2024-12-02 15:55:31,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=288, Invalid=8268, Unknown=0, NotChecked=0, Total=8556 [2024-12-02 15:55:31,192 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 185 mSDsluCounter, 6211 mSDsCounter, 0 mSdLazyCounter, 3811 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 6345 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:31,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 6345 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3811 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:55:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2024-12-02 15:55:33,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 4398. [2024-12-02 15:55:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4397 states have (on average 1.0352513077098022) internal successors, (4552), 4397 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 4552 transitions. [2024-12-02 15:55:33,517 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 4552 transitions. Word has length 102 [2024-12-02 15:55:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:55:33,517 INFO L471 AbstractCegarLoop]: Abstraction has 4398 states and 4552 transitions. [2024-12-02 15:55:33,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.112676056338028) internal successors, (150), 71 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 4552 transitions. [2024-12-02 15:55:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:55:33,520 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:55:33,520 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:55:33,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Ended with exit code 0 [2024-12-02 15:55:33,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,190 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:33,720 INFO L396 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:55:33,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:55:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2086947191, now seen corresponding path program 188 times [2024-12-02 15:55:33,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:55:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167251911] [2024-12-02 15:55:33,721 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:55:33,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:55:33,737 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:55:33,737 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:55:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:55:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167251911] [2024-12-02 15:55:34,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167251911] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:55:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949390292] [2024-12-02 15:55:34,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:55:34,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:34,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:55:34,782 INFO L229 MonitoredProcess]: Starting monitored process 191 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:55:34,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2024-12-02 15:55:34,943 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:55:34,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:34,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-12-02 15:55:34,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:55:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:55:36,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:55:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:55:36,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949390292] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:55:36,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:55:36,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 73 [2024-12-02 15:55:36,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847091263] [2024-12-02 15:55:36,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:55:36,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-12-02 15:55:36,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:36,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-12-02 15:55:36,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=5075, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 15:55:36,343 INFO L87 Difference]: Start difference. First operand 4398 states and 4552 transitions. Second operand has 73 states, 73 states have (on average 2.1095890410958904) internal successors, (154), 73 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:40,641 INFO L93 Difference]: Finished difference Result 4443 states and 4596 transitions. [2024-12-02 15:55:40,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 15:55:40,642 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.1095890410958904) internal successors, (154), 73 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:55:40,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:40,646 INFO L225 Difference]: With dead ends: 4443 [2024-12-02 15:55:40,646 INFO L226 Difference]: Without dead ends: 4381 [2024-12-02 15:55:40,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=290, Invalid=8830, Unknown=0, NotChecked=0, Total=9120 [2024-12-02 15:55:40,647 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 206 mSDsluCounter, 6879 mSDsCounter, 0 mSdLazyCounter, 4073 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 7027 SdHoareTripleChecker+Invalid, 4074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:40,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 7027 Invalid, 4074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4073 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:55:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2024-12-02 15:55:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 4381. [2024-12-02 15:55:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.0351598173515981) internal successors, (4534), 4380 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 4534 transitions. [2024-12-02 15:55:42,961 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 4534 transitions. Word has length 102 [2024-12-02 15:55:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:55:42,961 INFO L471 AbstractCegarLoop]: Abstraction has 4381 states and 4534 transitions. [2024-12-02 15:55:42,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.1095890410958904) internal successors, (154), 73 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 4534 transitions. [2024-12-02 15:55:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:55:42,964 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:55:42,964 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:55:42,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Ended with exit code 0 [2024-12-02 15:55:43,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,191 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:43,164 INFO L396 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:55:43,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:55:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1616833817, now seen corresponding path program 189 times [2024-12-02 15:55:43,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:55:43,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005839274] [2024-12-02 15:55:43,165 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:55:43,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:55:43,191 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-12-02 15:55:43,191 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:55:44,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:55:44,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005839274] [2024-12-02 15:55:44,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005839274] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:55:44,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509436335] [2024-12-02 15:55:44,325 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:55:44,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:44,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:55:44,327 INFO L229 MonitoredProcess]: Starting monitored process 192 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:55:44,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2024-12-02 15:55:44,512 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-12-02 15:55:44,512 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:44,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-12-02 15:55:44,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:55:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:55:45,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:55:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:55:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509436335] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:55:45,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:55:45,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 75 [2024-12-02 15:55:45,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560546914] [2024-12-02 15:55:45,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:55:45,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-12-02 15:55:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:45,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-12-02 15:55:45,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=5368, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 15:55:45,855 INFO L87 Difference]: Start difference. First operand 4381 states and 4534 transitions. Second operand has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 75 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:50,465 INFO L93 Difference]: Finished difference Result 4428 states and 4580 transitions. [2024-12-02 15:55:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 15:55:50,465 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 75 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:55:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:50,469 INFO L225 Difference]: With dead ends: 4428 [2024-12-02 15:55:50,469 INFO L226 Difference]: Without dead ends: 4368 [2024-12-02 15:55:50,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=292, Invalid=9410, Unknown=0, NotChecked=0, Total=9702 [2024-12-02 15:55:50,470 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 230 mSDsluCounter, 8683 mSDsCounter, 0 mSdLazyCounter, 4980 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 8845 SdHoareTripleChecker+Invalid, 4981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:50,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 8845 Invalid, 4981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4980 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 15:55:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2024-12-02 15:55:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 4368. [2024-12-02 15:55:52,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 1.0350354934737807) internal successors, (4520), 4367 states have internal predecessors, (4520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 4520 transitions. [2024-12-02 15:55:52,818 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 4520 transitions. Word has length 102 [2024-12-02 15:55:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:55:52,818 INFO L471 AbstractCegarLoop]: Abstraction has 4368 states and 4520 transitions. [2024-12-02 15:55:52,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 75 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 4520 transitions. [2024-12-02 15:55:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 15:55:52,821 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:55:52,821 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:55:52,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Ended with exit code 0 [2024-12-02 15:55:53,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,192 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:53,022 INFO L396 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:55:53,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:55:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash 787578793, now seen corresponding path program 190 times [2024-12-02 15:55:53,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:55:53,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578690535] [2024-12-02 15:55:53,022 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:55:53,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:55:53,038 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:55:53,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 724 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:55:54,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:55:54,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578690535] [2024-12-02 15:55:54,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578690535] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:55:54,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957109715] [2024-12-02 15:55:54,169 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:55:54,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:55:54,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:55:54,170 INFO L229 MonitoredProcess]: Starting monitored process 193 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:55:54,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2024-12-02 15:55:54,339 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:55:54,339 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:55:54,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-12-02 15:55:54,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:55:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 724 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:55:55,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:55:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 724 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:55:55,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957109715] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:55:55,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:55:55,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 76 [2024-12-02 15:55:55,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789642588] [2024-12-02 15:55:55,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:55:55,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-12-02 15:55:55,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:55:55,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-12-02 15:55:55,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=5522, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 15:55:55,721 INFO L87 Difference]: Start difference. First operand 4368 states and 4520 transitions. Second operand has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 76 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:00,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:56:00,462 INFO L93 Difference]: Finished difference Result 4601 states and 4764 transitions. [2024-12-02 15:56:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-12-02 15:56:00,463 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 76 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 15:56:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:56:00,467 INFO L225 Difference]: With dead ends: 4601 [2024-12-02 15:56:00,467 INFO L226 Difference]: Without dead ends: 4591 [2024-12-02 15:56:00,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=289, Invalid=9811, Unknown=0, NotChecked=0, Total=10100 [2024-12-02 15:56:00,468 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 277 mSDsluCounter, 8747 mSDsCounter, 0 mSdLazyCounter, 5015 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 8921 SdHoareTripleChecker+Invalid, 5016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:56:00,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 8921 Invalid, 5016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5015 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 15:56:00,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2024-12-02 15:56:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 4381. [2024-12-02 15:56:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.0351598173515981) internal successors, (4534), 4380 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 4534 transitions. [2024-12-02 15:56:02,792 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 4534 transitions. Word has length 102 [2024-12-02 15:56:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:56:02,793 INFO L471 AbstractCegarLoop]: Abstraction has 4381 states and 4534 transitions. [2024-12-02 15:56:02,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 76 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 4534 transitions. [2024-12-02 15:56:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 15:56:02,795 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:56:02,795 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:56:02,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Forceful destruction successful, exit code 0 [2024-12-02 15:56:02,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2024-12-02 15:56:02,996 INFO L396 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:56:02,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:56:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 806609149, now seen corresponding path program 191 times [2024-12-02 15:56:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:56:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671034089] [2024-12-02 15:56:02,996 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:56:02,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:56:03,009 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-12-02 15:56:03,009 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:56:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:56:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:56:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671034089] [2024-12-02 15:56:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671034089] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:56:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610487396] [2024-12-02 15:56:03,250 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:56:03,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:56:03,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:56:03,251 INFO L229 MonitoredProcess]: Starting monitored process 194 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:56:03,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2024-12-02 15:56:03,434 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-12-02 15:56:03,434 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:56:03,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:56:03,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:56:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:56:03,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:56:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:56:03,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610487396] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:56:03,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:56:03,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 35 [2024-12-02 15:56:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167327821] [2024-12-02 15:56:03,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:56:03,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 15:56:03,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:56:03,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 15:56:03,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 15:56:03,854 INFO L87 Difference]: Start difference. First operand 4381 states and 4534 transitions. Second operand has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:56:07,606 INFO L93 Difference]: Finished difference Result 5420 states and 5651 transitions. [2024-12-02 15:56:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-12-02 15:56:07,606 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-02 15:56:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:56:07,614 INFO L225 Difference]: With dead ends: 5420 [2024-12-02 15:56:07,614 INFO L226 Difference]: Without dead ends: 4841 [2024-12-02 15:56:07,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 176 SyntacticMatches, 21 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1980, Invalid=5852, Unknown=0, NotChecked=0, Total=7832 [2024-12-02 15:56:07,616 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 94 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:56:07,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 347 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:56:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2024-12-02 15:56:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 4840. [2024-12-02 15:56:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4840 states, 4839 states have (on average 1.0359578425294482) internal successors, (5013), 4839 states have internal predecessors, (5013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4840 states to 4840 states and 5013 transitions. [2024-12-02 15:56:10,135 INFO L78 Accepts]: Start accepts. Automaton has 4840 states and 5013 transitions. Word has length 104 [2024-12-02 15:56:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:56:10,135 INFO L471 AbstractCegarLoop]: Abstraction has 4840 states and 5013 transitions. [2024-12-02 15:56:10,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4840 states and 5013 transitions. [2024-12-02 15:56:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 15:56:10,138 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:56:10,138 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:56:10,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Ended with exit code 0 [2024-12-02 15:56:10,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200,194 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:56:10,338 INFO L396 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:56:10,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:56:10,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1819654205, now seen corresponding path program 192 times [2024-12-02 15:56:10,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:56:10,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685160794] [2024-12-02 15:56:10,339 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:56:10,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:56:10,360 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 15:56:10,360 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:56:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 102 proven. 119 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:56:10,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:56:10,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685160794] [2024-12-02 15:56:10,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685160794] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:56:10,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755510000] [2024-12-02 15:56:10,604 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:56:10,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:56:10,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:56:10,605 INFO L229 MonitoredProcess]: Starting monitored process 195 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:56:10,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2024-12-02 15:56:10,788 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-12-02 15:56:10,788 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:56:10,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:56:10,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:56:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:56:11,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:56:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 15:56:11,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755510000] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:56:11,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:56:11,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2024-12-02 15:56:11,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943606878] [2024-12-02 15:56:11,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:56:11,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 15:56:11,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:56:11,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 15:56:11,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:56:11,222 INFO L87 Difference]: Start difference. First operand 4840 states and 5013 transitions. Second operand has 37 states, 37 states have (on average 2.5945945945945947) internal successors, (96), 37 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:56:14,888 INFO L93 Difference]: Finished difference Result 5111 states and 5306 transitions. [2024-12-02 15:56:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-12-02 15:56:14,888 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.5945945945945947) internal successors, (96), 37 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-02 15:56:14,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:56:14,893 INFO L225 Difference]: With dead ends: 5111 [2024-12-02 15:56:14,893 INFO L226 Difference]: Without dead ends: 5078 [2024-12-02 15:56:14,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 175 SyntacticMatches, 20 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1842, Invalid=6348, Unknown=0, NotChecked=0, Total=8190 [2024-12-02 15:56:14,894 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 119 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:56:14,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 267 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:56:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2024-12-02 15:56:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 4959. [2024-12-02 15:56:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4959 states, 4958 states have (on average 1.0391286809197258) internal successors, (5152), 4958 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 5152 transitions. [2024-12-02 15:56:17,434 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 5152 transitions. Word has length 104 [2024-12-02 15:56:17,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:56:17,434 INFO L471 AbstractCegarLoop]: Abstraction has 4959 states and 5152 transitions. [2024-12-02 15:56:17,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.5945945945945947) internal successors, (96), 37 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 5152 transitions. [2024-12-02 15:56:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 15:56:17,437 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:56:17,437 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:56:17,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Ended with exit code 0 [2024-12-02 15:56:17,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2024-12-02 15:56:17,638 INFO L396 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:56:17,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:56:17,638 INFO L85 PathProgramCache]: Analyzing trace with hash -913367859, now seen corresponding path program 193 times [2024-12-02 15:56:17,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:56:17,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049982691] [2024-12-02 15:56:17,638 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:56:17,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:56:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 761 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:56:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:56:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049982691] [2024-12-02 15:56:18,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049982691] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:56:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732681739] [2024-12-02 15:56:18,806 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:56:18,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:56:18,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:56:18,807 INFO L229 MonitoredProcess]: Starting monitored process 196 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:56:18,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc57f0e-a6a0-49e0-aea8-642746e90deb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2024-12-02 15:56:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:18,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 15:56:18,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:56:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 761 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:56:21,261 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:56:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 39 proven. 722 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:56:23,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732681739] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:56:23,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:56:23,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 43, 43] total 106 [2024-12-02 15:56:23,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566837010] [2024-12-02 15:56:23,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:56:23,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-12-02 15:56:23,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:56:23,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-12-02 15:56:23,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=10776, Unknown=0, NotChecked=0, Total=11130 [2024-12-02 15:56:23,442 INFO L87 Difference]: Start difference. First operand 4959 states and 5152 transitions. Second operand has 106 states, 106 states have (on average 2.2735849056603774) internal successors, (241), 106 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)