./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum_m3.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_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum_m3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB --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 1743decb4413dd023f2c21969cafbefd9f03a99467b1795f9affedc42875deb2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:02:18,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:02:18,844 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:02:18,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:02:18,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:02:18,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:02:18,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:02:18,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:02:18,883 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:02:18,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:02:18,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:02:18,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:02:18,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:02:18,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:02:18,884 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:02:18,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:02:18,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:02:18,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:02:18,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:02:18,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:02:18,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:02:18,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:02:18,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:02:18,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:02:18,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:02:18,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:02:18,887 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:02:18,887 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:02:18,887 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:02:18,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:02:18,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:02:18,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:02:18,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:18,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:02:18,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:02:18,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:02:18,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:02:18,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:18,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:02:18,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:02:18,888 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:02:18,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:02:18,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:02:18,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:02:18,889 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:02:18,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:02:18,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:02:18,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:02:18,889 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_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 1743decb4413dd023f2c21969cafbefd9f03a99467b1795f9affedc42875deb2 [2024-11-28 04:02:19,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:02:19,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:02:19,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:02:19,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:02:19,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:02:19,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-crafted/zero_sum_m3.c [2024-11-28 04:02:22,574 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/data/937606600/d95d2abccef74410bf6a349c1cadd779/FLAG9e509e0e2 [2024-11-28 04:02:22,877 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:02:22,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/sv-benchmarks/c/array-crafted/zero_sum_m3.c [2024-11-28 04:02:22,886 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/data/937606600/d95d2abccef74410bf6a349c1cadd779/FLAG9e509e0e2 [2024-11-28 04:02:22,911 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/data/937606600/d95d2abccef74410bf6a349c1cadd779 [2024-11-28 04:02:22,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:02:22,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:02:22,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:02:22,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:02:22,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:02:22,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:02:22" (1/1) ... [2024-11-28 04:02:22,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a99d911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:22, skipping insertion in model container [2024-11-28 04:02:22,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:02:22" (1/1) ... [2024-11-28 04:02:22,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:02:23,147 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_81ad16c7-3ff2-4449-9113-ec1c9851a664/sv-benchmarks/c/array-crafted/zero_sum_m3.c[402,415] [2024-11-28 04:02:23,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:02:23,200 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:02:23,213 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_81ad16c7-3ff2-4449-9113-ec1c9851a664/sv-benchmarks/c/array-crafted/zero_sum_m3.c[402,415] [2024-11-28 04:02:23,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:02:23,256 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:02:23,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23 WrapperNode [2024-11-28 04:02:23,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:02:23,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:02:23,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:02:23,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:02:23,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,316 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2024-11-28 04:02:23,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:02:23,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:02:23,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:02:23,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:02:23,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,358 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 04:02:23,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,364 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:02:23,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:02:23,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:02:23,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:02:23,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (1/1) ... [2024-11-28 04:02:23,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:23,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:23,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:02:23,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:02:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:02:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:02:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:02:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:02:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:02:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:02:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:02:23,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:02:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:02:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:02:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:02:23,584 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:02:23,586 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:02:23,857 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-28 04:02:23,857 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:02:23,872 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:02:23,873 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 04:02:23,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:23 BoogieIcfgContainer [2024-11-28 04:02:23,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:02:23,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:02:23,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:02:23,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:02:23,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:02:22" (1/3) ... [2024-11-28 04:02:23,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585a0d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:23, skipping insertion in model container [2024-11-28 04:02:23,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:23" (2/3) ... [2024-11-28 04:02:23,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585a0d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:23, skipping insertion in model container [2024-11-28 04:02:23,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:23" (3/3) ... [2024-11-28 04:02:23,889 INFO L128 eAbstractionObserver]: Analyzing ICFG zero_sum_m3.c [2024-11-28 04:02:23,913 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:02:23,914 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum_m3.c that has 1 procedures, 32 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-28 04:02:23,994 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:02:24,012 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;@da00625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:02:24,012 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:02:24,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:24,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:02:24,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:24,027 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:24,027 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:24,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1363657814, now seen corresponding path program 1 times [2024-11-28 04:02:24,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:24,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966579790] [2024-11-28 04:02:24,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:24,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:24,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:24,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:24,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966579790] [2024-11-28 04:02:24,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966579790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:24,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:24,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:02:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499760814] [2024-11-28 04:02:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:24,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:02:24,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:24,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:02:24,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:02:24,305 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 0 states have call successors, (0), 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 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:24,322 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2024-11-28 04:02:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:02:24,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-28 04:02:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:24,331 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:02:24,331 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 04:02:24,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:02:24,338 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:24,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:02:24,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 04:02:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-28 04:02:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-28 04:02:24,372 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 19 [2024-11-28 04:02:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:24,373 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-28 04:02:24,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-28 04:02:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:02:24,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:24,374 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:24,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:02:24,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:24,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:24,376 INFO L85 PathProgramCache]: Analyzing trace with hash 678478894, now seen corresponding path program 1 times [2024-11-28 04:02:24,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:24,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243143797] [2024-11-28 04:02:24,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:24,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:24,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243143797] [2024-11-28 04:02:24,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243143797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:24,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:24,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:24,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017193656] [2024-11-28 04:02:24,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:24,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:02:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:24,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:02:24,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:02:24,560 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:24,629 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2024-11-28 04:02:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:02:24,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-28 04:02:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:24,631 INFO L225 Difference]: With dead ends: 51 [2024-11-28 04:02:24,631 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 04:02:24,631 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 [2024-11-28 04:02:24,632 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:24,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:02:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 04:02:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-28 04:02:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-28 04:02:24,639 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 19 [2024-11-28 04:02:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:24,639 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-28 04:02:24,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:24,640 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-28 04:02:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:02:24,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:24,641 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] [2024-11-28 04:02:24,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:02:24,641 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:24,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1431315182, now seen corresponding path program 1 times [2024-11-28 04:02:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329694209] [2024-11-28 04:02:24,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:24,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:02:24,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:24,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329694209] [2024-11-28 04:02:24,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329694209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:24,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:24,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:02:24,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163335330] [2024-11-28 04:02:24,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:24,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:02:24,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:24,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:02:24,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:02:24,876 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:25,044 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-28 04:02:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:02:25,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-28 04:02:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:25,046 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:02:25,046 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 04:02:25,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:02:25,047 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:25,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 17 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:02:25,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 04:02:25,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2024-11-28 04:02:25,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-28 04:02:25,059 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 21 [2024-11-28 04:02:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:25,059 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-28 04:02:25,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:25,059 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-28 04:02:25,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:02:25,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:25,060 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, 1, 1, 1] [2024-11-28 04:02:25,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:02:25,061 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:25,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash 620025770, now seen corresponding path program 1 times [2024-11-28 04:02:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:25,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019949978] [2024-11-28 04:02:25,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:02:25,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019949978] [2024-11-28 04:02:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019949978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032458246] [2024-11-28 04:02:25,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:25,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:25,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:25,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:25,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:02:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:25,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:02:25,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:02:25,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:02:25,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032458246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:25,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:25,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:02:25,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229284130] [2024-11-28 04:02:25,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:25,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:25,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:25,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:25,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:25,590 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:25,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:25,689 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-28 04:02:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:02:25,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 33 [2024-11-28 04:02:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:25,691 INFO L225 Difference]: With dead ends: 65 [2024-11-28 04:02:25,692 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 04:02:25,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:25,694 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:25,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:02:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 04:02:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-28 04:02:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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) [2024-11-28 04:02:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-28 04:02:25,709 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 33 [2024-11-28 04:02:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:25,710 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-28 04:02:25,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-28 04:02:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:02:25,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:25,713 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, 1, 1, 1] [2024-11-28 04:02:25,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:02:25,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:25,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:25,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:25,916 INFO L85 PathProgramCache]: Analyzing trace with hash -430665330, now seen corresponding path program 2 times [2024-11-28 04:02:25,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:25,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931161034] [2024-11-28 04:02:25,916 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:25,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:25,949 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:25,950 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:02:26,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:26,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931161034] [2024-11-28 04:02:26,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931161034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:26,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001746134] [2024-11-28 04:02:26,120 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:26,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:26,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:26,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:02:26,222 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:26,223 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:26,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:02:26,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:02:26,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:02:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001746134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:26,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:26,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 04:02:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645242981] [2024-11-28 04:02:26,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:26,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:02:26,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:26,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:02:26,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:26,401 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:26,623 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2024-11-28 04:02:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:26,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 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 35 [2024-11-28 04:02:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:26,624 INFO L225 Difference]: With dead ends: 78 [2024-11-28 04:02:26,624 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 04:02:26,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:02:26,626 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 69 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:26,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 25 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 04:02:26,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2024-11-28 04:02:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 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) [2024-11-28 04:02:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-28 04:02:26,645 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 35 [2024-11-28 04:02:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:26,645 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-28 04:02:26,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-28 04:02:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:02:26,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:26,651 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1] [2024-11-28 04:02:26,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:02:26,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:26,852 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:26,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash 658285094, now seen corresponding path program 3 times [2024-11-28 04:02:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382727080] [2024-11-28 04:02:26,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:02:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:27,070 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:02:27,074 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:31,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382727080] [2024-11-28 04:02:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382727080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693973038] [2024-11-28 04:02:31,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:02:31,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:31,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:31,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:31,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:02:31,116 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:02:31,117 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:31,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 04:02:31,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:02:32,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:34,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:02:34,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 80 [2024-11-28 04:02:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:02:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693973038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:34,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:34,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 23] total 60 [2024-11-28 04:02:34,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031980637] [2024-11-28 04:02:34,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:34,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-28 04:02:34,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:34,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-28 04:02:34,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=3251, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:02:34,766 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 60 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) [2024-11-28 04:02:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:37,430 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2024-11-28 04:02:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:02:37,431 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 60 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 47 [2024-11-28 04:02:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:37,432 INFO L225 Difference]: With dead ends: 91 [2024-11-28 04:02:37,432 INFO L226 Difference]: Without dead ends: 87 [2024-11-28 04:02:37,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1749 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=397, Invalid=4159, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 04:02:37,436 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:37,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 175 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:02:37,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-28 04:02:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2024-11-28 04:02:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 76 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) [2024-11-28 04:02:37,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2024-11-28 04:02:37,450 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 47 [2024-11-28 04:02:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:37,451 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2024-11-28 04:02:37,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.033333333333333) internal successors, (122), 60 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) [2024-11-28 04:02:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2024-11-28 04:02:37,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:02:37,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:37,454 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1] [2024-11-28 04:02:37,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:02:37,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:02:37,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:37,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1581991498, now seen corresponding path program 4 times [2024-11-28 04:02:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:37,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537160871] [2024-11-28 04:02:37,656 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:02:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:37,678 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:02:37,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:02:37,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:37,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537160871] [2024-11-28 04:02:37,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537160871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:37,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383266396] [2024-11-28 04:02:37,800 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:02:37,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:37,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:37,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:37,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:02:37,876 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:02:37,876 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:37,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:02:37,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:02:37,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:02:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383266396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:38,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:38,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 04:02:38,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578392102] [2024-11-28 04:02:38,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:38,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:02:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:38,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:02:38,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:02:38,050 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:38,545 INFO L93 Difference]: Finished difference Result 123 states and 142 transitions. [2024-11-28 04:02:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:02:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 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 49 [2024-11-28 04:02:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:38,547 INFO L225 Difference]: With dead ends: 123 [2024-11-28 04:02:38,550 INFO L226 Difference]: Without dead ends: 95 [2024-11-28 04:02:38,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 88 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:02:38,552 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 50 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:38,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 53 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:02:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-28 04:02:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2024-11-28 04:02:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.141025641025641) internal successors, (89), 78 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) [2024-11-28 04:02:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2024-11-28 04:02:38,577 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 49 [2024-11-28 04:02:38,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:38,578 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2024-11-28 04:02:38,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:38,578 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2024-11-28 04:02:38,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:02:38,579 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:38,579 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1] [2024-11-28 04:02:38,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:02:38,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:02:38,780 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:38,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:38,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1190560906, now seen corresponding path program 5 times [2024-11-28 04:02:38,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:38,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140625489] [2024-11-28 04:02:38,781 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:02:38,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:38,810 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:02:38,810 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:02:38,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140625489] [2024-11-28 04:02:38,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140625489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339682338] [2024-11-28 04:02:38,936 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:02:38,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:38,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:38,939 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:38,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:02:39,052 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:02:39,053 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:39,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:02:39,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:02:39,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:02:39,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339682338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:39,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:39,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 04:02:39,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364032648] [2024-11-28 04:02:39,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:39,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:02:39,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:39,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:02:39,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:02:39,209 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:39,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:39,511 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2024-11-28 04:02:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:02:39,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 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 49 [2024-11-28 04:02:39,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:39,513 INFO L225 Difference]: With dead ends: 134 [2024-11-28 04:02:39,513 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 04:02:39,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:02:39,515 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:39,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 56 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:02:39,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 04:02:39,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2024-11-28 04:02:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 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) [2024-11-28 04:02:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-11-28 04:02:39,531 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 49 [2024-11-28 04:02:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:39,532 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-11-28 04:02:39,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:39,532 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-11-28 04:02:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 04:02:39,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:39,536 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:02:39,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:02:39,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:39,736 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:39,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:39,737 INFO L85 PathProgramCache]: Analyzing trace with hash -876708162, now seen corresponding path program 6 times [2024-11-28 04:02:39,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:39,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261998438] [2024-11-28 04:02:39,737 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:02:39,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:39,794 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 04:02:39,794 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:02:39,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261998438] [2024-11-28 04:02:39,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261998438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456662480] [2024-11-28 04:02:39,951 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:02:39,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:39,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:39,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:39,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:02:40,050 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 04:02:40,051 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:40,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:02:40,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:02:40,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:02:40,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456662480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:40,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:40,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 04:02:40,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672881201] [2024-11-28 04:02:40,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:40,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:02:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:40,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:02:40,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:02:40,309 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:40,465 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2024-11-28 04:02:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:02:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 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 59 [2024-11-28 04:02:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:40,467 INFO L225 Difference]: With dead ends: 115 [2024-11-28 04:02:40,467 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 04:02:40,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:02:40,468 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:40,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 152 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:02:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 04:02:40,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-11-28 04:02:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 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) [2024-11-28 04:02:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2024-11-28 04:02:40,477 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 59 [2024-11-28 04:02:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:40,478 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2024-11-28 04:02:40,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:02:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2024-11-28 04:02:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:02:40,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:40,479 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1] [2024-11-28 04:02:40,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:02:40,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:40,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:40,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:40,684 INFO L85 PathProgramCache]: Analyzing trace with hash 632021922, now seen corresponding path program 7 times [2024-11-28 04:02:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:40,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271948153] [2024-11-28 04:02:40,685 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:02:40,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:46,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:46,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271948153] [2024-11-28 04:02:46,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271948153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:46,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608448352] [2024-11-28 04:02:46,265 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:02:46,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:46,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:46,268 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:46,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:02:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:46,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-28 04:02:46,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:46,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:02:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:02:47,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:02:49,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608448352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:49,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:49,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 27, 25] total 69 [2024-11-28 04:02:49,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208239644] [2024-11-28 04:02:49,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:49,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-28 04:02:49,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:49,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-28 04:02:49,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=4470, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 04:02:49,895 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 69 states, 69 states have (on average 2.1739130434782608) internal successors, (150), 69 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) [2024-11-28 04:02:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:56,313 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2024-11-28 04:02:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-28 04:02:56,314 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.1739130434782608) internal successors, (150), 69 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 61 [2024-11-28 04:02:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:56,315 INFO L225 Difference]: With dead ends: 170 [2024-11-28 04:02:56,315 INFO L226 Difference]: Without dead ends: 166 [2024-11-28 04:02:56,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2396 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=551, Invalid=9751, Unknown=0, NotChecked=0, Total=10302 [2024-11-28 04:02:56,318 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 3893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:56,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 290 Invalid, 3893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 3779 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:02:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-28 04:02:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 101. [2024-11-28 04:02:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.13) internal successors, (113), 100 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) [2024-11-28 04:02:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2024-11-28 04:02:56,345 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 61 [2024-11-28 04:02:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:56,345 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2024-11-28 04:02:56,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.1739130434782608) internal successors, (150), 69 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) [2024-11-28 04:02:56,346 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2024-11-28 04:02:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:02:56,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:56,350 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1] [2024-11-28 04:02:56,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:02:56,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:02:56,550 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:56,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash -509529594, now seen corresponding path program 8 times [2024-11-28 04:02:56,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:56,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435231484] [2024-11-28 04:02:56,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:56,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:56,573 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:56,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:02:56,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:56,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435231484] [2024-11-28 04:02:56,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435231484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:56,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985670736] [2024-11-28 04:02:56,758 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:56,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:56,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:56,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:56,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:02:56,857 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:02:56,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:56,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:02:56,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:02:57,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:02:57,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985670736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:57,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:57,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-28 04:02:57,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515199248] [2024-11-28 04:02:57,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:57,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:02:57,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:57,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:02:57,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:02:57,135 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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) [2024-11-28 04:02:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:57,450 INFO L93 Difference]: Finished difference Result 235 states and 263 transitions. [2024-11-28 04:02:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:02:57,450 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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 63 [2024-11-28 04:02:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:57,451 INFO L225 Difference]: With dead ends: 235 [2024-11-28 04:02:57,452 INFO L226 Difference]: Without dead ends: 104 [2024-11-28 04:02:57,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 113 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:02:57,453 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:57,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 47 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:02:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-28 04:02:57,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2024-11-28 04:02:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1274509803921569) internal successors, (115), 102 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) [2024-11-28 04:02:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2024-11-28 04:02:57,491 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 63 [2024-11-28 04:02:57,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:57,492 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2024-11-28 04:02:57,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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) [2024-11-28 04:02:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2024-11-28 04:02:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 04:02:57,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:57,495 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1] [2024-11-28 04:02:57,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:02:57,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:02:57,700 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:57,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:57,700 INFO L85 PathProgramCache]: Analyzing trace with hash 180978922, now seen corresponding path program 9 times [2024-11-28 04:02:57,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:57,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240035933] [2024-11-28 04:02:57,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:02:57,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:57,768 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:02:57,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 04:02:57,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:57,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240035933] [2024-11-28 04:02:57,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240035933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:57,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733937860] [2024-11-28 04:02:57,986 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:02:57,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:57,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:57,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:57,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:02:58,108 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:02:58,109 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:58,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:02:58,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 04:02:58,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 04:02:58,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733937860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:58,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:58,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-28 04:02:58,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686363925] [2024-11-28 04:02:58,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:58,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:02:58,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:58,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:02:58,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:02:58,426 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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) [2024-11-28 04:02:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:58,705 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2024-11-28 04:02:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:02:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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 65 [2024-11-28 04:02:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:58,706 INFO L225 Difference]: With dead ends: 164 [2024-11-28 04:02:58,706 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 04:02:58,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 116 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:02:58,707 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:58,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 51 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 04:02:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2024-11-28 04:02:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 75 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) [2024-11-28 04:02:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-11-28 04:02:58,725 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 65 [2024-11-28 04:02:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:58,725 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-11-28 04:02:58,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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) [2024-11-28 04:02:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-11-28 04:02:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:02:58,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:58,727 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 1] [2024-11-28 04:02:58,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:02:58,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:58,927 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:58,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:58,928 INFO L85 PathProgramCache]: Analyzing trace with hash -652846050, now seen corresponding path program 10 times [2024-11-28 04:02:58,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:58,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852288122] [2024-11-28 04:02:58,928 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:02:58,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:59,009 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:02:59,010 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 94 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:03:04,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852288122] [2024-11-28 04:03:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852288122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949148223] [2024-11-28 04:03:04,613 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:03:04,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:04,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:04,615 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:04,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:03:04,713 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:03:04,713 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:04,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-28 04:03:04,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:03:07,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:10,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:10,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 69 treesize of output 153 [2024-11-28 04:03:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:03:11,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949148223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:11,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:11,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 30, 31] total 85 [2024-11-28 04:03:11,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172139898] [2024-11-28 04:03:11,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:11,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-28 04:03:11,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:11,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-28 04:03:11,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=6887, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 04:03:11,477 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 85 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) [2024-11-28 04:03:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:25,505 INFO L93 Difference]: Finished difference Result 209 states and 231 transitions. [2024-11-28 04:03:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 04:03:25,506 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 85 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) Word has length 75 [2024-11-28 04:03:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:25,509 INFO L225 Difference]: With dead ends: 209 [2024-11-28 04:03:25,510 INFO L226 Difference]: Without dead ends: 204 [2024-11-28 04:03:25,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4553 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=910, Invalid=19112, Unknown=0, NotChecked=0, Total=20022 [2024-11-28 04:03:25,516 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 261 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 7554 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 7870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 7554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:25,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 384 Invalid, 7870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 7554 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-28 04:03:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-28 04:03:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 91. [2024-11-28 04:03:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1) internal successors, (99), 90 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) [2024-11-28 04:03:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2024-11-28 04:03:25,577 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 75 [2024-11-28 04:03:25,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:25,577 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2024-11-28 04:03:25,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 85 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) [2024-11-28 04:03:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2024-11-28 04:03:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:03:25,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:25,578 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 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, 1] [2024-11-28 04:03:25,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:03:25,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:03:25,779 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:25,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:25,780 INFO L85 PathProgramCache]: Analyzing trace with hash 213777922, now seen corresponding path program 11 times [2024-11-28 04:03:25,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461283438] [2024-11-28 04:03:25,780 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:03:25,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:25,817 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:03:25,817 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:03:26,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461283438] [2024-11-28 04:03:26,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461283438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388772222] [2024-11-28 04:03:26,026 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:03:26,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:26,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:26,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:26,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:03:26,273 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:03:26,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:26,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:03:26,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:03:26,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:03:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388772222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:26,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-11-28 04:03:26,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230868711] [2024-11-28 04:03:26,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:26,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:03:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:26,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:03:26,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:03:26,552 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 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) [2024-11-28 04:03:27,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:27,082 INFO L93 Difference]: Finished difference Result 219 states and 241 transitions. [2024-11-28 04:03:27,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:03:27,083 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 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 77 [2024-11-28 04:03:27,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:27,084 INFO L225 Difference]: With dead ends: 219 [2024-11-28 04:03:27,085 INFO L226 Difference]: Without dead ends: 108 [2024-11-28 04:03:27,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 144 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:03:27,086 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 145 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:27,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 51 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:03:27,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-28 04:03:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2024-11-28 04:03:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 95 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) [2024-11-28 04:03:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2024-11-28 04:03:27,140 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 77 [2024-11-28 04:03:27,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:27,141 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2024-11-28 04:03:27,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 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) [2024-11-28 04:03:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2024-11-28 04:03:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:03:27,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:27,142 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2024-11-28 04:03:27,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:27,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:03:27,343 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:27,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1601096146, now seen corresponding path program 12 times [2024-11-28 04:03:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449132316] [2024-11-28 04:03:27,343 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:03:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:27,400 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:03:27,400 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-28 04:03:27,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449132316] [2024-11-28 04:03:27,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449132316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059000971] [2024-11-28 04:03:27,634 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:03:27,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:27,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:27,637 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:27,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:03:27,830 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:03:27,831 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:27,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:03:27,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-28 04:03:28,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-28 04:03:28,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059000971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:28,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:28,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-28 04:03:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901118834] [2024-11-28 04:03:28,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:28,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:03:28,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:28,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:03:28,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:03:28,225 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 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) [2024-11-28 04:03:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:28,742 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2024-11-28 04:03:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:03:28,743 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 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 83 [2024-11-28 04:03:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:28,744 INFO L225 Difference]: With dead ends: 107 [2024-11-28 04:03:28,744 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 04:03:28,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 151 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:03:28,745 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 108 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:28,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 69 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:03:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 04:03:28,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2024-11-28 04:03:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0804597701149425) internal successors, (94), 87 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2024-11-28 04:03:28,792 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 83 [2024-11-28 04:03:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:28,792 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2024-11-28 04:03:28,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 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) [2024-11-28 04:03:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2024-11-28 04:03:28,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:03:28,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:28,793 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2024-11-28 04:03:28,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:03:28,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:28,998 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:28,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1407771830, now seen corresponding path program 13 times [2024-11-28 04:03:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:28,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8220847] [2024-11-28 04:03:28,999 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:03:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 04:03:29,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:29,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8220847] [2024-11-28 04:03:29,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8220847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814037721] [2024-11-28 04:03:29,241 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:03:29,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:29,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:29,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:29,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:03:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:29,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:03:29,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 04:03:29,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 04:03:29,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814037721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:29,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:29,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-28 04:03:29,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097273450] [2024-11-28 04:03:29,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:29,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:03:29,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:29,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:03:29,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:03:29,673 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 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) [2024-11-28 04:03:29,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:29,912 INFO L93 Difference]: Finished difference Result 167 states and 179 transitions. [2024-11-28 04:03:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:03:29,912 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 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 87 [2024-11-28 04:03:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:29,913 INFO L225 Difference]: With dead ends: 167 [2024-11-28 04:03:29,913 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 04:03:29,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 158 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:03:29,914 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:29,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 130 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:29,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 04:03:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2024-11-28 04:03:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0786516853932584) internal successors, (96), 89 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) [2024-11-28 04:03:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2024-11-28 04:03:29,965 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 87 [2024-11-28 04:03:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:29,965 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2024-11-28 04:03:29,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 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) [2024-11-28 04:03:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2024-11-28 04:03:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:03:29,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:29,966 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 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, 1] [2024-11-28 04:03:29,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:03:30,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:03:30,167 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:30,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:30,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1195390054, now seen corresponding path program 14 times [2024-11-28 04:03:30,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:30,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195078949] [2024-11-28 04:03:30,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:30,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:30,233 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:30,234 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:37,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:37,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195078949] [2024-11-28 04:03:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195078949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:37,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019756337] [2024-11-28 04:03:37,698 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:37,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:37,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:37,700 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:37,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:03:37,819 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:37,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:37,822 WARN L254 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 139 conjuncts are in the unsatisfiable core [2024-11-28 04:03:37,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:37,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:03:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:40,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:03:45,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019756337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:45,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:45,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 41, 37] total 105 [2024-11-28 04:03:45,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69392929] [2024-11-28 04:03:45,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:45,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-28 04:03:45,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:45,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-28 04:03:45,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=10517, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 04:03:45,282 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 105 states, 105 states have (on average 2.0952380952380953) internal successors, (220), 105 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:58,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:58,908 INFO L93 Difference]: Finished difference Result 242 states and 264 transitions. [2024-11-28 04:03:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-28 04:03:58,909 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0952380952380953) internal successors, (220), 105 states have internal predecessors, (220), 0 states have call successors, (0), 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 89 [2024-11-28 04:03:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:58,911 INFO L225 Difference]: With dead ends: 242 [2024-11-28 04:03:58,911 INFO L226 Difference]: Without dead ends: 238 [2024-11-28 04:03:58,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6133 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1192, Invalid=22678, Unknown=0, NotChecked=0, Total=23870 [2024-11-28 04:03:58,915 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 150 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 7228 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 7449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 7228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:58,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 313 Invalid, 7449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 7228 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-28 04:03:58,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-28 04:03:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 147. [2024-11-28 04:03:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.095890410958904) internal successors, (160), 146 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 160 transitions. [2024-11-28 04:03:59,029 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 160 transitions. Word has length 89 [2024-11-28 04:03:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:59,030 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 160 transitions. [2024-11-28 04:03:59,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.0952380952380953) internal successors, (220), 105 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 160 transitions. [2024-11-28 04:03:59,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:03:59,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:59,031 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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, 1] [2024-11-28 04:03:59,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:03:59,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:03:59,232 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:59,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:59,232 INFO L85 PathProgramCache]: Analyzing trace with hash 303905790, now seen corresponding path program 15 times [2024-11-28 04:03:59,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:59,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315795857] [2024-11-28 04:03:59,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:03:59,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:59,347 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:03:59,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 04:03:59,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:59,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315795857] [2024-11-28 04:03:59,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315795857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:59,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566611884] [2024-11-28 04:03:59,625 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:03:59,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:59,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:59,627 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:59,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:03:59,801 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:03:59,802 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:59,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:03:59,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 04:04:00,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 04:04:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566611884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:00,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:00,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-28 04:04:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229253891] [2024-11-28 04:04:00,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:00,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:04:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:00,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:04:00,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:04:00,259 INFO L87 Difference]: Start difference. First operand 147 states and 160 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 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) [2024-11-28 04:04:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:01,318 INFO L93 Difference]: Finished difference Result 274 states and 299 transitions. [2024-11-28 04:04:01,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:04:01,319 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 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 91 [2024-11-28 04:04:01,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:01,320 INFO L225 Difference]: With dead ends: 274 [2024-11-28 04:04:01,320 INFO L226 Difference]: Without dead ends: 183 [2024-11-28 04:04:01,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 169 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:04:01,321 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 114 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:01,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 74 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:04:01,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-28 04:04:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 139. [2024-11-28 04:04:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0797101449275361) internal successors, (149), 138 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) [2024-11-28 04:04:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2024-11-28 04:04:01,390 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 91 [2024-11-28 04:04:01,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:01,391 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2024-11-28 04:04:01,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 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) [2024-11-28 04:04:01,391 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2024-11-28 04:04:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:04:01,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:01,392 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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, 1] [2024-11-28 04:04:01,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:04:01,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:04:01,597 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:01,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:01,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2074795778, now seen corresponding path program 16 times [2024-11-28 04:04:01,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:01,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396167351] [2024-11-28 04:04:01,598 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:04:01,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:01,620 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:04:01,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 04:04:01,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:01,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396167351] [2024-11-28 04:04:01,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396167351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:01,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411970825] [2024-11-28 04:04:01,871 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:04:01,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:01,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:01,875 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:01,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:04:01,970 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:04:01,970 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:01,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:04:01,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 04:04:02,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 04:04:02,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411970825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:02,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:02,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2024-11-28 04:04:02,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195843696] [2024-11-28 04:04:02,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:02,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:04:02,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:02,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:04:02,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:04:02,435 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 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) [2024-11-28 04:04:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:02,975 INFO L93 Difference]: Finished difference Result 230 states and 245 transitions. [2024-11-28 04:04:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:04:02,975 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 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 91 [2024-11-28 04:04:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:02,977 INFO L225 Difference]: With dead ends: 230 [2024-11-28 04:04:02,977 INFO L226 Difference]: Without dead ends: 108 [2024-11-28 04:04:02,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 164 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:04:02,978 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 140 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:02,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 55 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:04:02,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-28 04:04:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2024-11-28 04:04:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0693069306930694) internal successors, (108), 101 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) [2024-11-28 04:04:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2024-11-28 04:04:03,025 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 91 [2024-11-28 04:04:03,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:03,026 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2024-11-28 04:04:03,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 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) [2024-11-28 04:04:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2024-11-28 04:04:03,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-28 04:04:03,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:03,027 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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] [2024-11-28 04:04:03,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:04:03,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:03,228 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:03,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1759188430, now seen corresponding path program 17 times [2024-11-28 04:04:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850980289] [2024-11-28 04:04:03,229 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:04:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:03,317 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 04:04:03,317 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 04:04:03,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:03,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850980289] [2024-11-28 04:04:03,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850980289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:03,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881251752] [2024-11-28 04:04:03,581 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:04:03,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:03,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:03,583 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:03,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:04:03,979 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 04:04:03,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:03,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:04:03,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 04:04:04,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 04:04:04,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881251752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:04,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:04,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2024-11-28 04:04:04,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816858993] [2024-11-28 04:04:04,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:04,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:04:04,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:04,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:04:04,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:04:04,466 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 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) [2024-11-28 04:04:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:04,754 INFO L93 Difference]: Finished difference Result 193 states and 205 transitions. [2024-11-28 04:04:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:04:04,754 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 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 101 [2024-11-28 04:04:04,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:04,755 INFO L225 Difference]: With dead ends: 193 [2024-11-28 04:04:04,755 INFO L226 Difference]: Without dead ends: 105 [2024-11-28 04:04:04,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 184 SyntacticMatches, 12 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:04:04,756 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:04,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 111 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-28 04:04:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2024-11-28 04:04:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 103 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) [2024-11-28 04:04:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2024-11-28 04:04:04,806 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 101 [2024-11-28 04:04:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:04,806 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2024-11-28 04:04:04,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 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) [2024-11-28 04:04:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2024-11-28 04:04:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 04:04:04,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:04,808 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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, 1] [2024-11-28 04:04:04,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:04:05,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:05,009 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:05,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash -161746410, now seen corresponding path program 18 times [2024-11-28 04:04:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946818896] [2024-11-28 04:04:05,009 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:04:05,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:05,121 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 04:04:05,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:04:14,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:14,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946818896] [2024-11-28 04:04:14,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946818896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:14,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541366700] [2024-11-28 04:04:14,021 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:04:14,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:14,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:14,023 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:14,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:04:14,240 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 04:04:14,240 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:14,244 WARN L254 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 177 conjuncts are in the unsatisfiable core [2024-11-28 04:04:14,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:14,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:04:23,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:04:23,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2024-11-28 04:04:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:23,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:04:34,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541366700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:34,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:34,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 62, 55] total 162 [2024-11-28 04:04:34,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098446733] [2024-11-28 04:04:34,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:34,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2024-11-28 04:04:34,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:34,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2024-11-28 04:04:34,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1217, Invalid=24865, Unknown=0, NotChecked=0, Total=26082 [2024-11-28 04:04:34,478 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 162 states, 162 states have (on average 1.7407407407407407) internal successors, (282), 162 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:51,020 INFO L93 Difference]: Finished difference Result 278 states and 296 transitions. [2024-11-28 04:04:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-28 04:04:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 1.7407407407407407) internal successors, (282), 162 states have internal predecessors, (282), 0 states have call successors, (0), 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 103 [2024-11-28 04:04:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:51,022 INFO L225 Difference]: With dead ends: 278 [2024-11-28 04:04:51,022 INFO L226 Difference]: Without dead ends: 274 [2024-11-28 04:04:51,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11718 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=1912, Invalid=38690, Unknown=0, NotChecked=0, Total=40602 [2024-11-28 04:04:51,027 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 9335 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 9557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 9335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:51,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 284 Invalid, 9557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 9335 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-28 04:04:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-28 04:04:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 165. [2024-11-28 04:04:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.0731707317073171) internal successors, (176), 164 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 176 transitions. [2024-11-28 04:04:51,125 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 176 transitions. Word has length 103 [2024-11-28 04:04:51,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:51,125 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 176 transitions. [2024-11-28 04:04:51,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 1.7407407407407407) internal successors, (282), 162 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 176 transitions. [2024-11-28 04:04:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:04:51,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:51,127 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 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, 1] [2024-11-28 04:04:51,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:51,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:51,328 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:51,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:51,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1702697530, now seen corresponding path program 19 times [2024-11-28 04:04:51,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:51,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215778948] [2024-11-28 04:04:51,328 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:04:51,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 04:04:51,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:51,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215778948] [2024-11-28 04:04:51,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215778948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:51,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244700264] [2024-11-28 04:04:51,693 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:04:51,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:51,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:51,696 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:51,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:04:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:51,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:04:51,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 04:04:52,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 04:04:52,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244700264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:52,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:52,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-28 04:04:52,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042866302] [2024-11-28 04:04:52,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:52,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:04:52,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:52,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:04:52,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:04:52,242 INFO L87 Difference]: Start difference. First operand 165 states and 176 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:52,862 INFO L93 Difference]: Finished difference Result 328 states and 350 transitions. [2024-11-28 04:04:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:04:52,866 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 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 105 [2024-11-28 04:04:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:52,867 INFO L225 Difference]: With dead ends: 328 [2024-11-28 04:04:52,867 INFO L226 Difference]: Without dead ends: 168 [2024-11-28 04:04:52,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 188 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:04:52,870 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:52,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 60 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:04:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-28 04:04:52,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2024-11-28 04:04:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.072289156626506) internal successors, (178), 166 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 178 transitions. [2024-11-28 04:04:52,955 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 178 transitions. Word has length 105 [2024-11-28 04:04:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:52,955 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 178 transitions. [2024-11-28 04:04:52,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 178 transitions. [2024-11-28 04:04:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:04:52,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:52,957 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 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, 1] [2024-11-28 04:04:52,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:53,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:53,161 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:53,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:53,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1067085794, now seen corresponding path program 20 times [2024-11-28 04:04:53,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:53,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889180720] [2024-11-28 04:04:53,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:04:53,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:53,187 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:04:53,187 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-28 04:04:53,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889180720] [2024-11-28 04:04:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889180720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809628484] [2024-11-28 04:04:53,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:04:53,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:53,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:53,537 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:53,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:04:53,683 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:04:53,683 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:53,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:04:53,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-28 04:04:53,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-28 04:04:54,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809628484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:54,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:54,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-28 04:04:54,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940041377] [2024-11-28 04:04:54,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:54,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:04:54,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:54,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:04:54,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:04:54,102 INFO L87 Difference]: Start difference. First operand 167 states and 178 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:54,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:54,528 INFO L93 Difference]: Finished difference Result 245 states and 265 transitions. [2024-11-28 04:04:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:04:54,528 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 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 107 [2024-11-28 04:04:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:54,530 INFO L225 Difference]: With dead ends: 245 [2024-11-28 04:04:54,530 INFO L226 Difference]: Without dead ends: 124 [2024-11-28 04:04:54,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 191 SyntacticMatches, 14 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:04:54,531 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 138 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:54,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 36 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-28 04:04:54,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2024-11-28 04:04:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0598290598290598) internal successors, (124), 117 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) [2024-11-28 04:04:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2024-11-28 04:04:54,591 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 107 [2024-11-28 04:04:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:54,592 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2024-11-28 04:04:54,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2024-11-28 04:04:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:04:54,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:54,593 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 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, 1] [2024-11-28 04:04:54,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:54,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:04:54,794 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:54,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2047774610, now seen corresponding path program 21 times [2024-11-28 04:04:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:54,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726896900] [2024-11-28 04:04:54,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:04:54,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:54,935 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 04:04:54,936 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:05:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 2 proven. 341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:10,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:10,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726896900] [2024-11-28 04:05:10,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726896900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:05:10,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075764093] [2024-11-28 04:05:10,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:05:10,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:10,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:10,795 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:10,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:05:10,989 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 04:05:10,989 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:05:10,994 WARN L254 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 202 conjuncts are in the unsatisfiable core [2024-11-28 04:05:10,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:11,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:05:23,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:05:23,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:05:23,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 33 [2024-11-28 04:05:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:23,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:41,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075764093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:41,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:05:41,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 71] total 196 [2024-11-28 04:05:41,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460407805] [2024-11-28 04:05:41,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:41,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2024-11-28 04:05:41,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:41,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2024-11-28 04:05:41,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2464, Invalid=35756, Unknown=0, NotChecked=0, Total=38220 [2024-11-28 04:05:41,684 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand has 196 states, 196 states have (on average 1.7040816326530612) internal successors, (334), 196 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:15,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:15,480 INFO L93 Difference]: Finished difference Result 540 states and 594 transitions. [2024-11-28 04:07:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2024-11-28 04:07:15,481 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 1.7040816326530612) internal successors, (334), 196 states have internal predecessors, (334), 0 states have call successors, (0), 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 117 [2024-11-28 04:07:15,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:15,483 INFO L225 Difference]: With dead ends: 540 [2024-11-28 04:07:15,483 INFO L226 Difference]: Without dead ends: 533 [2024-11-28 04:07:15,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40513 ImplicationChecksByTransitivity, 101.9s TimeCoverageRelationStatistics Valid=9769, Invalid=131983, Unknown=0, NotChecked=0, Total=141752 [2024-11-28 04:07:15,489 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 802 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 22461 mSolverCounterSat, 1550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 24011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1550 IncrementalHoareTripleChecker+Valid, 22461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:15,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 512 Invalid, 24011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1550 Valid, 22461 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2024-11-28 04:07:15,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-28 04:07:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 332. [2024-11-28 04:07:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.1027190332326284) internal successors, (365), 331 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 365 transitions. [2024-11-28 04:07:15,709 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 365 transitions. Word has length 117 [2024-11-28 04:07:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:15,709 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 365 transitions. [2024-11-28 04:07:15,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 1.7040816326530612) internal successors, (334), 196 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 365 transitions. [2024-11-28 04:07:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 04:07:15,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:15,712 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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, 1] [2024-11-28 04:07:15,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:07:15,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:07:15,913 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:15,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1246515098, now seen corresponding path program 22 times [2024-11-28 04:07:15,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:15,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733272709] [2024-11-28 04:07:15,914 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:07:15,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:15,943 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:07:15,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:07:16,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:16,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733272709] [2024-11-28 04:07:16,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733272709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:16,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933913778] [2024-11-28 04:07:16,220 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:07:16,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:16,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:16,222 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:16,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:07:16,361 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:07:16,361 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:16,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:07:16,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:07:16,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:07:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:07:16,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933913778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:07:16,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:07:16,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2024-11-28 04:07:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123847960] [2024-11-28 04:07:16,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:07:16,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:07:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:16,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:07:16,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:07:16,779 INFO L87 Difference]: Start difference. First operand 332 states and 365 transitions. Second operand has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:18,254 INFO L93 Difference]: Finished difference Result 610 states and 667 transitions. [2024-11-28 04:07:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:07:18,254 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 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 121 [2024-11-28 04:07:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:18,257 INFO L225 Difference]: With dead ends: 610 [2024-11-28 04:07:18,257 INFO L226 Difference]: Without dead ends: 448 [2024-11-28 04:07:18,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 217 SyntacticMatches, 17 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1443, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 04:07:18,259 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 195 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:18,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 60 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:07:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-28 04:07:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 264. [2024-11-28 04:07:18,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.064638783269962) internal successors, (280), 263 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 280 transitions. [2024-11-28 04:07:18,462 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 280 transitions. Word has length 121 [2024-11-28 04:07:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:18,462 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 280 transitions. [2024-11-28 04:07:18,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 280 transitions. [2024-11-28 04:07:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 04:07:18,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:18,464 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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, 1] [2024-11-28 04:07:18,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:07:18,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:07:18,665 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:18,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:18,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1595597350, now seen corresponding path program 23 times [2024-11-28 04:07:18,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:18,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600668791] [2024-11-28 04:07:18,666 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:07:18,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:18,741 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-28 04:07:18,741 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:07:19,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:19,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600668791] [2024-11-28 04:07:19,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600668791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:19,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100389087] [2024-11-28 04:07:19,097 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:07:19,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:19,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:19,099 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:19,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:07:20,374 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-28 04:07:20,374 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:20,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:07:20,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:07:20,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:07:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:07:20,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100389087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:07:20,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:07:20,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2024-11-28 04:07:20,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680812054] [2024-11-28 04:07:20,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:07:20,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:07:20,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:20,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:07:20,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:07:20,797 INFO L87 Difference]: Start difference. First operand 264 states and 280 transitions. Second operand has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:21,579 INFO L93 Difference]: Finished difference Result 444 states and 469 transitions. [2024-11-28 04:07:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:07:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 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 121 [2024-11-28 04:07:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:21,582 INFO L225 Difference]: With dead ends: 444 [2024-11-28 04:07:21,582 INFO L226 Difference]: Without dead ends: 317 [2024-11-28 04:07:21,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 217 SyntacticMatches, 17 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:07:21,583 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 124 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:21,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 106 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:07:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-28 04:07:21,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 215. [2024-11-28 04:07:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.060747663551402) internal successors, (227), 214 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 227 transitions. [2024-11-28 04:07:21,780 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 227 transitions. Word has length 121 [2024-11-28 04:07:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:21,780 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 227 transitions. [2024-11-28 04:07:21,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 227 transitions. [2024-11-28 04:07:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 04:07:21,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:21,782 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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, 1] [2024-11-28 04:07:21,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 04:07:21,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:07:21,983 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:21,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash 113171482, now seen corresponding path program 24 times [2024-11-28 04:07:21,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:21,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273116796] [2024-11-28 04:07:21,985 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:07:21,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:22,108 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:07:22,108 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:07:22,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:22,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273116796] [2024-11-28 04:07:22,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273116796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:22,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227954879] [2024-11-28 04:07:22,524 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:07:22,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:22,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:22,527 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:22,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:07:22,957 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:07:22,958 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:22,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:07:22,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:07:23,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:07:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:07:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227954879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:07:23,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:07:23,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-28 04:07:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466271603] [2024-11-28 04:07:23,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:07:23,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 04:07:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:23,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 04:07:23,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:07:23,566 INFO L87 Difference]: Start difference. First operand 215 states and 227 transitions. Second operand has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 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) [2024-11-28 04:07:24,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:24,484 INFO L93 Difference]: Finished difference Result 325 states and 342 transitions. [2024-11-28 04:07:24,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:07:24,485 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 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 121 [2024-11-28 04:07:24,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:24,486 INFO L225 Difference]: With dead ends: 325 [2024-11-28 04:07:24,487 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 04:07:24,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 217 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:07:24,488 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:24,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 61 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:07:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 04:07:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2024-11-28 04:07:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0534351145038168) internal successors, (138), 131 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 138 transitions. [2024-11-28 04:07:24,621 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 138 transitions. Word has length 121 [2024-11-28 04:07:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:24,621 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 138 transitions. [2024-11-28 04:07:24,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 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) [2024-11-28 04:07:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 138 transitions. [2024-11-28 04:07:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 04:07:24,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:24,622 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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] [2024-11-28 04:07:24,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:07:24,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:07:24,822 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:24,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash -563387378, now seen corresponding path program 25 times [2024-11-28 04:07:24,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:24,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207492194] [2024-11-28 04:07:24,823 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:07:24,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 51 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:40,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207492194] [2024-11-28 04:07:40,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207492194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:40,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625037499] [2024-11-28 04:07:40,851 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:07:40,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:40,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:40,853 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:40,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:07:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:41,091 WARN L254 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 220 conjuncts are in the unsatisfiable core [2024-11-28 04:07:41,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:41,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:07:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:47,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 04:08:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625037499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:08:01,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:08:01,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 62, 55] total 153 [2024-11-28 04:08:01,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373948872] [2024-11-28 04:08:01,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:01,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2024-11-28 04:08:01,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:01,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2024-11-28 04:08:01,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=22712, Unknown=0, NotChecked=0, Total=23256 [2024-11-28 04:08:01,466 INFO L87 Difference]: Start difference. First operand 132 states and 138 transitions. Second operand has 153 states, 153 states have (on average 2.0718954248366015) internal successors, (317), 153 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:08:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:30,043 INFO L93 Difference]: Finished difference Result 315 states and 334 transitions. [2024-11-28 04:08:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-28 04:08:30,043 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 2.0718954248366015) internal successors, (317), 153 states have internal predecessors, (317), 0 states have call successors, (0), 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 131 [2024-11-28 04:08:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:30,046 INFO L225 Difference]: With dead ends: 315 [2024-11-28 04:08:30,046 INFO L226 Difference]: Without dead ends: 311 [2024-11-28 04:08:30,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11240 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=1662, Invalid=46958, Unknown=0, NotChecked=0, Total=48620 [2024-11-28 04:08:30,050 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 284 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 14968 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 15292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 14968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:30,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 463 Invalid, 15292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [324 Valid, 14968 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2024-11-28 04:08:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-28 04:08:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 191. [2024-11-28 04:08:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0578947368421052) internal successors, (201), 190 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:08:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2024-11-28 04:08:30,243 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 131 [2024-11-28 04:08:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:30,243 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 201 transitions. [2024-11-28 04:08:30,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 2.0718954248366015) internal successors, (317), 153 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:08:30,244 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 201 transitions. [2024-11-28 04:08:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 04:08:30,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:30,245 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 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] [2024-11-28 04:08:30,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:30,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:08:30,445 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:30,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash 450094962, now seen corresponding path program 26 times [2024-11-28 04:08:30,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:30,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451776151] [2024-11-28 04:08:30,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:08:30,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:30,476 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:08:30,476 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 04:08:30,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:30,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451776151] [2024-11-28 04:08:30,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451776151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:30,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893395337] [2024-11-28 04:08:30,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:08:30,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:30,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:30,782 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:30,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:08:30,939 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:08:30,939 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:30,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:08:30,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 04:08:31,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 04:08:31,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893395337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:08:31,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:08:31,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-28 04:08:31,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343154149] [2024-11-28 04:08:31,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:31,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:08:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:31,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:08:31,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:08:31,523 INFO L87 Difference]: Start difference. First operand 191 states and 201 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 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) [2024-11-28 04:08:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:32,522 INFO L93 Difference]: Finished difference Result 457 states and 482 transitions. [2024-11-28 04:08:32,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 04:08:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 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 133 [2024-11-28 04:08:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:32,524 INFO L225 Difference]: With dead ends: 457 [2024-11-28 04:08:32,524 INFO L226 Difference]: Without dead ends: 194 [2024-11-28 04:08:32,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 238 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:08:32,526 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 65 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:32,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 86 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:08:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-28 04:08:32,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2024-11-28 04:08:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0572916666666667) internal successors, (203), 192 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:08:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 203 transitions. [2024-11-28 04:08:32,684 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 203 transitions. Word has length 133 [2024-11-28 04:08:32,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:32,684 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 203 transitions. [2024-11-28 04:08:32,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 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) [2024-11-28 04:08:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 203 transitions. [2024-11-28 04:08:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 04:08:32,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:32,684 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 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] [2024-11-28 04:08:32,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 04:08:32,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:08:32,885 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:32,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:32,885 INFO L85 PathProgramCache]: Analyzing trace with hash -665690282, now seen corresponding path program 27 times [2024-11-28 04:08:32,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:32,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771556595] [2024-11-28 04:08:32,886 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:08:32,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:32,972 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 04:08:32,972 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 49 proven. 96 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-28 04:08:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771556595] [2024-11-28 04:08:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771556595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255260222] [2024-11-28 04:08:33,315 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:08:33,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:33,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:33,317 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:33,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:08:33,551 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 04:08:33,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:33,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:08:33,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-28 04:08:33,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-28 04:08:34,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255260222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:08:34,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:08:34,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-28 04:08:34,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213092166] [2024-11-28 04:08:34,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:34,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:08:34,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:34,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:08:34,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:08:34,032 INFO L87 Difference]: Start difference. First operand 193 states and 203 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 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) [2024-11-28 04:08:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:35,619 INFO L93 Difference]: Finished difference Result 358 states and 380 transitions. [2024-11-28 04:08:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:08:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 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 135 [2024-11-28 04:08:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:35,621 INFO L225 Difference]: With dead ends: 358 [2024-11-28 04:08:35,621 INFO L226 Difference]: Without dead ends: 241 [2024-11-28 04:08:35,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 251 SyntacticMatches, 18 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=538, Invalid=1912, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 04:08:35,623 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 248 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:35,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 67 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:08:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-28 04:08:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 201. [2024-11-28 04:08:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.055) internal successors, (211), 200 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:08:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 211 transitions. [2024-11-28 04:08:35,953 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 211 transitions. Word has length 135 [2024-11-28 04:08:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:35,953 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 211 transitions. [2024-11-28 04:08:35,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 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) [2024-11-28 04:08:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 211 transitions. [2024-11-28 04:08:35,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 04:08:35,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:35,955 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 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] [2024-11-28 04:08:35,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:08:36,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:36,156 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:36,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1426398122, now seen corresponding path program 28 times [2024-11-28 04:08:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:36,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28484355] [2024-11-28 04:08:36,156 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:08:36,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:36,186 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:08:36,186 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-28 04:08:36,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:36,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28484355] [2024-11-28 04:08:36,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28484355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:36,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703704346] [2024-11-28 04:08:36,507 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:08:36,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:36,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:36,510 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:36,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:08:36,671 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:08:36,671 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:36,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:08:36,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-28 04:08:37,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-28 04:08:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703704346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:08:37,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:08:37,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 30 [2024-11-28 04:08:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412013951] [2024-11-28 04:08:37,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:37,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 04:08:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:37,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 04:08:37,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:08:37,308 INFO L87 Difference]: Start difference. First operand 201 states and 211 transitions. Second operand has 30 states, 30 states have (on average 2.7) internal successors, (81), 30 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) [2024-11-28 04:08:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:38,242 INFO L93 Difference]: Finished difference Result 328 states and 343 transitions. [2024-11-28 04:08:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 04:08:38,243 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 30 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 135 [2024-11-28 04:08:38,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:38,244 INFO L225 Difference]: With dead ends: 328 [2024-11-28 04:08:38,244 INFO L226 Difference]: Without dead ends: 152 [2024-11-28 04:08:38,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 243 SyntacticMatches, 18 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:08:38,245 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 270 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:38,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 62 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:08:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-28 04:08:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2024-11-28 04:08:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.0482758620689656) internal successors, (152), 145 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) [2024-11-28 04:08:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 152 transitions. [2024-11-28 04:08:38,376 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 152 transitions. Word has length 135 [2024-11-28 04:08:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:38,377 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 152 transitions. [2024-11-28 04:08:38,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 30 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) [2024-11-28 04:08:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 152 transitions. [2024-11-28 04:08:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 04:08:38,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:38,378 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 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] [2024-11-28 04:08:38,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 04:08:38,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 04:08:38,578 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:38,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1819684746, now seen corresponding path program 29 times [2024-11-28 04:08:38,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:38,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58673679] [2024-11-28 04:08:38,579 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:08:38,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:38,864 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:08:38,864 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:08:50,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58673679] [2024-11-28 04:08:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58673679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615969784] [2024-11-28 04:08:50,661 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:08:50,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:50,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:50,663 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:50,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:08:52,046 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:08:52,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:52,053 WARN L254 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 243 conjuncts are in the unsatisfiable core [2024-11-28 04:08:52,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:53,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:09:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:06,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:09:21,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615969784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:09:21,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:09:21,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 69, 61] total 166 [2024-11-28 04:09:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826609750] [2024-11-28 04:09:21,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:21,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2024-11-28 04:09:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:21,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2024-11-28 04:09:21,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=26892, Unknown=0, NotChecked=0, Total=27390 [2024-11-28 04:09:21,079 INFO L87 Difference]: Start difference. First operand 146 states and 152 transitions. Second operand has 166 states, 166 states have (on average 2.13855421686747) internal successors, (355), 166 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:36,735 INFO L93 Difference]: Finished difference Result 259 states and 270 transitions. [2024-11-28 04:09:36,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-28 04:09:36,736 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 2.13855421686747) internal successors, (355), 166 states have internal predecessors, (355), 0 states have call successors, (0), 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 145 [2024-11-28 04:09:36,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:36,737 INFO L225 Difference]: With dead ends: 259 [2024-11-28 04:09:36,737 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 04:09:36,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6399 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=498, Invalid=26892, Unknown=0, NotChecked=0, Total=27390 [2024-11-28 04:09:36,739 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 16077 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 16078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:36,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 588 Invalid, 16078 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 16077 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2024-11-28 04:09:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 04:09:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 231. [2024-11-28 04:09:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.0521739130434782) internal successors, (242), 230 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 242 transitions. [2024-11-28 04:09:37,028 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 242 transitions. Word has length 145 [2024-11-28 04:09:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:37,028 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 242 transitions. [2024-11-28 04:09:37,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 2.13855421686747) internal successors, (355), 166 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 242 transitions. [2024-11-28 04:09:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 04:09:37,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:37,030 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 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] [2024-11-28 04:09:37,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 04:09:37,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 04:09:37,231 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:37,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash 391961262, now seen corresponding path program 30 times [2024-11-28 04:09:37,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:37,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032350019] [2024-11-28 04:09:37,232 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:09:37,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:37,322 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 04:09:37,323 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 04:09:37,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:37,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032350019] [2024-11-28 04:09:37,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032350019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:37,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093319323] [2024-11-28 04:09:37,720 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:09:37,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:37,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:37,722 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:37,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:09:38,177 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 04:09:38,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:38,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:09:38,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 04:09:38,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 04:09:38,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093319323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:09:38,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:09:38,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-28 04:09:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486209848] [2024-11-28 04:09:38,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:38,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:09:38,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:38,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:09:38,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:09:38,864 INFO L87 Difference]: Start difference. First operand 231 states and 242 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 04:09:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:40,609 INFO L93 Difference]: Finished difference Result 347 states and 366 transitions. [2024-11-28 04:09:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 04:09:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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 147 [2024-11-28 04:09:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:40,611 INFO L225 Difference]: With dead ends: 347 [2024-11-28 04:09:40,611 INFO L226 Difference]: Without dead ends: 263 [2024-11-28 04:09:40,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 262 SyntacticMatches, 20 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=646, Invalid=2324, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 04:09:40,613 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 234 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:40,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 74 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:09:40,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-28 04:09:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 219. [2024-11-28 04:09:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.0504587155963303) internal successors, (229), 218 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) [2024-11-28 04:09:40,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 229 transitions. [2024-11-28 04:09:40,820 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 229 transitions. Word has length 147 [2024-11-28 04:09:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:40,820 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 229 transitions. [2024-11-28 04:09:40,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 04:09:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 229 transitions. [2024-11-28 04:09:40,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 04:09:40,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:40,821 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 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] [2024-11-28 04:09:40,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 04:09:41,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 04:09:41,022 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:41,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash 604129518, now seen corresponding path program 31 times [2024-11-28 04:09:41,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:41,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080320742] [2024-11-28 04:09:41,022 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:09:41,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 04:09:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080320742] [2024-11-28 04:09:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080320742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973029167] [2024-11-28 04:09:41,439 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:09:41,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:41,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:41,440 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:41,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:09:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:41,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:09:41,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 04:09:42,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 04:09:42,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973029167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:09:42,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:09:42,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-28 04:09:42,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563541297] [2024-11-28 04:09:42,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:42,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:09:42,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:42,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:09:42,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:09:42,470 INFO L87 Difference]: Start difference. First operand 219 states and 229 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 04:09:43,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:43,647 INFO L93 Difference]: Finished difference Result 458 states and 479 transitions. [2024-11-28 04:09:43,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:09:43,647 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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 147 [2024-11-28 04:09:43,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:43,649 INFO L225 Difference]: With dead ends: 458 [2024-11-28 04:09:43,650 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 04:09:43,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 263 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:09:43,650 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 81 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:43,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 67 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:09:43,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 04:09:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2024-11-28 04:09:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.05) internal successors, (231), 220 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 231 transitions. [2024-11-28 04:09:43,964 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 231 transitions. Word has length 147 [2024-11-28 04:09:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:43,964 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 231 transitions. [2024-11-28 04:09:43,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 04:09:43,965 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 231 transitions. [2024-11-28 04:09:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-28 04:09:43,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:43,966 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 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] [2024-11-28 04:09:43,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:09:44,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:44,166 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:44,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1926177234, now seen corresponding path program 32 times [2024-11-28 04:09:44,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:44,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009342042] [2024-11-28 04:09:44,167 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:09:44,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:44,195 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:09:44,195 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-11-28 04:09:44,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009342042] [2024-11-28 04:09:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009342042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70309262] [2024-11-28 04:09:44,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:09:44,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:44,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:44,632 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:44,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 04:09:44,835 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:09:44,835 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:44,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:09:44,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-11-28 04:09:45,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-11-28 04:09:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70309262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:09:45,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:09:45,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-28 04:09:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195173883] [2024-11-28 04:09:45,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:45,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:09:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:45,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:09:45,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:09:45,452 INFO L87 Difference]: Start difference. First operand 221 states and 231 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 04:09:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:46,085 INFO L93 Difference]: Finished difference Result 321 states and 335 transitions. [2024-11-28 04:09:46,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:09:46,086 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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 149 [2024-11-28 04:09:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:46,087 INFO L225 Difference]: With dead ends: 321 [2024-11-28 04:09:46,088 INFO L226 Difference]: Without dead ends: 166 [2024-11-28 04:09:46,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 266 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 04:09:46,089 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 265 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:46,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 54 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:09:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-28 04:09:46,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 160. [2024-11-28 04:09:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0440251572327044) internal successors, (166), 159 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:46,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 166 transitions. [2024-11-28 04:09:46,242 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 166 transitions. Word has length 149 [2024-11-28 04:09:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:46,243 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 166 transitions. [2024-11-28 04:09:46,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 04:09:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 166 transitions. [2024-11-28 04:09:46,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 04:09:46,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:46,244 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 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] [2024-11-28 04:09:46,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-28 04:09:46,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:46,444 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:46,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash 396538374, now seen corresponding path program 33 times [2024-11-28 04:09:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:46,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26513290] [2024-11-28 04:09:46,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:09:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:46,586 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:09:46,586 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 619 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:10:04,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:04,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26513290] [2024-11-28 04:10:04,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26513290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:04,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409956705] [2024-11-28 04:10:04,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:10:04,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:04,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:04,585 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:04,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 04:10:04,930 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:10:04,930 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:04,936 WARN L254 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 276 conjuncts are in the unsatisfiable core [2024-11-28 04:10:04,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:05,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:10:05,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:10:05,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:10:23,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:10:23,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:10:23,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 72 treesize of output 135 [2024-11-28 04:10:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 15 proven. 636 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:10:24,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 658 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:10:50,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409956705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:50,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:50,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 82, 83] total 230 [2024-11-28 04:10:50,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784344938] [2024-11-28 04:10:50,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:50,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 230 states [2024-11-28 04:10:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:50,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2024-11-28 04:10:50,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2714, Invalid=49956, Unknown=0, NotChecked=0, Total=52670 [2024-11-28 04:10:50,753 INFO L87 Difference]: Start difference. First operand 160 states and 166 transitions. Second operand has 230 states, 230 states have (on average 1.8130434782608695) internal successors, (417), 230 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:05,857 INFO L93 Difference]: Finished difference Result 395 states and 420 transitions. [2024-11-28 04:12:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2024-11-28 04:12:05,858 INFO L78 Accepts]: Start accepts. Automaton has has 230 states, 230 states have (on average 1.8130434782608695) internal successors, (417), 230 states have internal predecessors, (417), 0 states have call successors, (0), 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 159 [2024-11-28 04:12:05,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:05,860 INFO L225 Difference]: With dead ends: 395 [2024-11-28 04:12:05,860 INFO L226 Difference]: Without dead ends: 391 [2024-11-28 04:12:05,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28649 ImplicationChecksByTransitivity, 95.5s TimeCoverageRelationStatistics Valid=6120, Invalid=105770, Unknown=0, NotChecked=0, Total=111890 [2024-11-28 04:12:05,863 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 503 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 26509 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 27389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 26509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:05,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 508 Invalid, 27389 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [880 Valid, 26509 Invalid, 0 Unknown, 0 Unchecked, 28.3s Time] [2024-11-28 04:12:05,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-28 04:12:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 253. [2024-11-28 04:12:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.0476190476190477) internal successors, (264), 252 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 264 transitions. [2024-11-28 04:12:06,210 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 264 transitions. Word has length 159 [2024-11-28 04:12:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:06,210 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 264 transitions. [2024-11-28 04:12:06,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 230 states, 230 states have (on average 1.8130434782608695) internal successors, (417), 230 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 264 transitions. [2024-11-28 04:12:06,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 04:12:06,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:06,212 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 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] [2024-11-28 04:12:06,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 04:12:06,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 04:12:06,412 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:06,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1308253738, now seen corresponding path program 34 times [2024-11-28 04:12:06,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:06,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303296738] [2024-11-28 04:12:06,413 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:12:06,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:06,438 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:12:06,438 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 04:12:06,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:06,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303296738] [2024-11-28 04:12:06,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303296738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:06,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846043753] [2024-11-28 04:12:06,871 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:12:06,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:06,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:06,873 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:06,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 04:12:07,056 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:12:07,056 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:07,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:12:07,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 04:12:07,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 04:12:07,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846043753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:12:07,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:12:07,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 36 [2024-11-28 04:12:07,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254767589] [2024-11-28 04:12:07,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:07,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:12:07,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:07,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:12:07,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:12:07,646 INFO L87 Difference]: Start difference. First operand 253 states and 264 transitions. Second operand has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 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) [2024-11-28 04:12:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:09,538 INFO L93 Difference]: Finished difference Result 379 states and 398 transitions. [2024-11-28 04:12:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 04:12:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 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 161 [2024-11-28 04:12:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:09,540 INFO L225 Difference]: With dead ends: 379 [2024-11-28 04:12:09,540 INFO L226 Difference]: Without dead ends: 287 [2024-11-28 04:12:09,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 288 SyntacticMatches, 23 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=779, Invalid=2643, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:12:09,541 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 242 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:09,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 54 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:12:09,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-28 04:12:09,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 239. [2024-11-28 04:12:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.046218487394958) internal successors, (249), 238 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 249 transitions. [2024-11-28 04:12:09,823 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 249 transitions. Word has length 161 [2024-11-28 04:12:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:09,823 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 249 transitions. [2024-11-28 04:12:09,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 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) [2024-11-28 04:12:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 249 transitions. [2024-11-28 04:12:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 04:12:09,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:09,824 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 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] [2024-11-28 04:12:09,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:10,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:10,025 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:10,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1239933846, now seen corresponding path program 35 times [2024-11-28 04:12:10,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:10,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531755254] [2024-11-28 04:12:10,026 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:12:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:10,175 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-28 04:12:10,175 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 04:12:10,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:10,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531755254] [2024-11-28 04:12:10,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531755254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:10,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943577172] [2024-11-28 04:12:10,633 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:12:10,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:10,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:10,635 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:10,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 04:12:12,661 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-28 04:12:12,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:12,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:12:12,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 04:12:13,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 04:12:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943577172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:12:13,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:12:13,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 36 [2024-11-28 04:12:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001422678] [2024-11-28 04:12:13,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:13,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:12:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:13,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:12:13,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:12:13,429 INFO L87 Difference]: Start difference. First operand 239 states and 249 transitions. Second operand has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 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) [2024-11-28 04:12:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:14,677 INFO L93 Difference]: Finished difference Result 390 states and 405 transitions. [2024-11-28 04:12:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:12:14,678 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 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 161 [2024-11-28 04:12:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:14,679 INFO L225 Difference]: With dead ends: 390 [2024-11-28 04:12:14,679 INFO L226 Difference]: Without dead ends: 178 [2024-11-28 04:12:14,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 289 SyntacticMatches, 22 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:12:14,680 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 370 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:14,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 60 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:12:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-28 04:12:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2024-11-28 04:12:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.04093567251462) internal successors, (178), 171 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 178 transitions. [2024-11-28 04:12:14,957 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 178 transitions. Word has length 161 [2024-11-28 04:12:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:14,957 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 178 transitions. [2024-11-28 04:12:14,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 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) [2024-11-28 04:12:14,957 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 178 transitions. [2024-11-28 04:12:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-28 04:12:14,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:14,958 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:12:14,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 04:12:15,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 04:12:15,159 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:15,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1393245854, now seen corresponding path program 36 times [2024-11-28 04:12:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:15,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014169992] [2024-11-28 04:12:15,160 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:12:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:15,322 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 04:12:15,322 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 102 proven. 119 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 04:12:15,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:15,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014169992] [2024-11-28 04:12:15,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014169992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:15,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603938828] [2024-11-28 04:12:15,867 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:12:15,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:15,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:15,869 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:15,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 04:12:16,508 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 04:12:16,509 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:12:16,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:12:16,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 04:12:16,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 04:12:17,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603938828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:12:17,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:12:17,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-28 04:12:17,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143630170] [2024-11-28 04:12:17,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:17,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 04:12:17,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:17,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 04:12:17,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:12:17,338 INFO L87 Difference]: Start difference. First operand 172 states and 178 transitions. Second operand has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 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) [2024-11-28 04:12:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:17,804 INFO L93 Difference]: Finished difference Result 323 states and 335 transitions. [2024-11-28 04:12:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:12:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 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 171 [2024-11-28 04:12:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:17,806 INFO L225 Difference]: With dead ends: 323 [2024-11-28 04:12:17,806 INFO L226 Difference]: Without dead ends: 175 [2024-11-28 04:12:17,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 308 SyntacticMatches, 21 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:12:17,807 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:17,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 133 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:12:17,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-28 04:12:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2024-11-28 04:12:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.0404624277456647) internal successors, (180), 173 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 180 transitions. [2024-11-28 04:12:18,014 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 180 transitions. Word has length 171 [2024-11-28 04:12:18,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:18,014 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 180 transitions. [2024-11-28 04:12:18,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 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) [2024-11-28 04:12:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 180 transitions. [2024-11-28 04:12:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 04:12:18,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:18,015 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:12:18,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 04:12:18,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 04:12:18,215 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:18,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:18,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2043980674, now seen corresponding path program 37 times [2024-11-28 04:12:18,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:18,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241842263] [2024-11-28 04:12:18,216 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:12:18,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 26 proven. 821 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241842263] [2024-11-28 04:12:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241842263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:43,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927300832] [2024-11-28 04:12:43,123 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:12:43,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:43,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:43,127 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:43,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 04:12:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:43,362 WARN L254 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 298 conjuncts are in the unsatisfiable core [2024-11-28 04:12:43,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:44,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:12:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 847 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:53,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 04:13:19,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927300832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:19,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:19,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 83, 73] total 208 [2024-11-28 04:13:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283595001] [2024-11-28 04:13:19,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:19,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 208 states [2024-11-28 04:13:19,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:19,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2024-11-28 04:13:19,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=957, Invalid=42099, Unknown=0, NotChecked=0, Total=43056 [2024-11-28 04:13:19,894 INFO L87 Difference]: Start difference. First operand 174 states and 180 transitions. Second operand has 208 states, 208 states have (on average 2.0528846153846154) internal successors, (427), 208 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:15,526 INFO L93 Difference]: Finished difference Result 425 states and 446 transitions. [2024-11-28 04:14:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2024-11-28 04:14:15,527 INFO L78 Accepts]: Start accepts. Automaton has has 208 states, 208 states have (on average 2.0528846153846154) internal successors, (427), 208 states have internal predecessors, (427), 0 states have call successors, (0), 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 173 [2024-11-28 04:14:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:15,528 INFO L225 Difference]: With dead ends: 425 [2024-11-28 04:14:15,528 INFO L226 Difference]: Without dead ends: 421 [2024-11-28 04:14:15,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26184 ImplicationChecksByTransitivity, 72.5s TimeCoverageRelationStatistics Valid=2923, Invalid=100439, Unknown=0, NotChecked=0, Total=103362 [2024-11-28 04:14:15,530 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 224 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 23207 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 23537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 23207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:15,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 483 Invalid, 23537 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [330 Valid, 23207 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2024-11-28 04:14:15,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-28 04:14:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 251. [2024-11-28 04:14:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.044) internal successors, (261), 250 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) [2024-11-28 04:14:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 261 transitions. [2024-11-28 04:14:15,923 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 261 transitions. Word has length 173 [2024-11-28 04:14:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:15,924 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 261 transitions. [2024-11-28 04:14:15,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 208 states, 208 states have (on average 2.0528846153846154) internal successors, (427), 208 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 261 transitions. [2024-11-28 04:14:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 04:14:15,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:15,925 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:15,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:16,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 04:14:16,126 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:16,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash -780107290, now seen corresponding path program 38 times [2024-11-28 04:14:16,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:16,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990406904] [2024-11-28 04:14:16,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:16,163 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:16,163 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 04:14:16,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:16,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990406904] [2024-11-28 04:14:16,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990406904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:16,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543327491] [2024-11-28 04:14:16,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:16,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:16,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:16,658 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:16,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 04:14:16,879 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:16,879 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:16,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:14:16,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 04:14:17,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 04:14:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543327491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:17,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:17,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-28 04:14:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202257623] [2024-11-28 04:14:17,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:17,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 04:14:17,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:17,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 04:14:17,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:14:17,636 INFO L87 Difference]: Start difference. First operand 251 states and 261 transitions. Second operand has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 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) [2024-11-28 04:14:19,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:19,190 INFO L93 Difference]: Finished difference Result 601 states and 626 transitions. [2024-11-28 04:14:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:14:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 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 175 [2024-11-28 04:14:19,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:19,192 INFO L225 Difference]: With dead ends: 601 [2024-11-28 04:14:19,192 INFO L226 Difference]: Without dead ends: 254 [2024-11-28 04:14:19,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 313 SyntacticMatches, 23 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:14:19,194 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 105 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:19,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 87 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:14:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-28 04:14:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2024-11-28 04:14:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.0436507936507937) internal successors, (263), 252 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) [2024-11-28 04:14:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 263 transitions. [2024-11-28 04:14:19,511 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 263 transitions. Word has length 175 [2024-11-28 04:14:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:19,511 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 263 transitions. [2024-11-28 04:14:19,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 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) [2024-11-28 04:14:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 263 transitions. [2024-11-28 04:14:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 04:14:19,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:19,512 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:19,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:19,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:19,713 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:19,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1782635722, now seen corresponding path program 39 times [2024-11-28 04:14:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640319979] [2024-11-28 04:14:19,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:14:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:19,955 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-28 04:14:19,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 100 proven. 165 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2024-11-28 04:14:20,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:20,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640319979] [2024-11-28 04:14:20,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640319979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:20,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477492315] [2024-11-28 04:14:20,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:14:20,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:20,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:20,531 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:20,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 04:14:20,929 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-28 04:14:20,929 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:20,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:14:20,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 165 proven. 144 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2024-11-28 04:14:21,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 144 proven. 142 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2024-11-28 04:14:22,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477492315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:22,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:22,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 29] total 59 [2024-11-28 04:14:22,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62861174] [2024-11-28 04:14:22,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:22,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 04:14:22,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:22,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 04:14:22,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=855, Invalid=2567, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:14:22,407 INFO L87 Difference]: Start difference. First operand 253 states and 263 transitions. Second operand has 59 states, 59 states have (on average 2.3389830508474576) internal successors, (138), 59 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:24,929 INFO L93 Difference]: Finished difference Result 466 states and 488 transitions. [2024-11-28 04:14:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 04:14:24,930 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.3389830508474576) internal successors, (138), 59 states have internal predecessors, (138), 0 states have call successors, (0), 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 177 [2024-11-28 04:14:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:24,931 INFO L225 Difference]: With dead ends: 466 [2024-11-28 04:14:24,931 INFO L226 Difference]: Without dead ends: 313 [2024-11-28 04:14:24,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 322 SyntacticMatches, 13 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2598 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1636, Invalid=5170, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 04:14:24,933 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 334 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:24,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 60 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:14:24,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-28 04:14:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 261. [2024-11-28 04:14:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.0423076923076924) internal successors, (271), 260 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:25,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 271 transitions. [2024-11-28 04:14:25,293 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 271 transitions. Word has length 177 [2024-11-28 04:14:25,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:25,293 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 271 transitions. [2024-11-28 04:14:25,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.3389830508474576) internal successors, (138), 59 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 271 transitions. [2024-11-28 04:14:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 04:14:25,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:25,294 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:25,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 04:14:25,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:25,495 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:25,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:25,495 INFO L85 PathProgramCache]: Analyzing trace with hash -328072758, now seen corresponding path program 40 times [2024-11-28 04:14:25,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:25,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345074415] [2024-11-28 04:14:25,495 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:14:25,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:25,534 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:14:25,534 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2024-11-28 04:14:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345074415] [2024-11-28 04:14:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345074415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871058680] [2024-11-28 04:14:25,999 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:14:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:25,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:26,000 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:26,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 04:14:26,196 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:14:26,196 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:26,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:14:26,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2024-11-28 04:14:26,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2024-11-28 04:14:27,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871058680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:27,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:27,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 39 [2024-11-28 04:14:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254386930] [2024-11-28 04:14:27,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:27,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:14:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:27,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:14:27,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:14:27,029 INFO L87 Difference]: Start difference. First operand 261 states and 271 transitions. Second operand has 39 states, 39 states have (on average 2.5384615384615383) internal successors, (99), 39 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) [2024-11-28 04:14:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:28,371 INFO L93 Difference]: Finished difference Result 424 states and 439 transitions. [2024-11-28 04:14:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:14:28,371 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5384615384615383) internal successors, (99), 39 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 177 [2024-11-28 04:14:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:28,373 INFO L225 Difference]: With dead ends: 424 [2024-11-28 04:14:28,373 INFO L226 Difference]: Without dead ends: 194 [2024-11-28 04:14:28,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 318 SyntacticMatches, 24 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=633, Invalid=1917, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 04:14:28,374 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 484 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:28,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 59 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:14:28,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-28 04:14:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2024-11-28 04:14:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0374331550802138) internal successors, (194), 187 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 194 transitions. [2024-11-28 04:14:28,681 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 194 transitions. Word has length 177 [2024-11-28 04:14:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:28,681 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 194 transitions. [2024-11-28 04:14:28,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5384615384615383) internal successors, (99), 39 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) [2024-11-28 04:14:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 194 transitions. [2024-11-28 04:14:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-28 04:14:28,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:28,682 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:28,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:28,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:28,882 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:28,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:28,883 INFO L85 PathProgramCache]: Analyzing trace with hash -815801346, now seen corresponding path program 41 times [2024-11-28 04:14:28,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:28,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715500248] [2024-11-28 04:14:28,883 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:14:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:29,720 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 04:14:29,720 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:55,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715500248] [2024-11-28 04:14:55,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715500248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051347481] [2024-11-28 04:14:55,165 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:14:55,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:55,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:55,166 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:55,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 04:14:58,807 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 04:14:58,807 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:58,818 WARN L254 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 341 conjuncts are in the unsatisfiable core [2024-11-28 04:14:58,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:58,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:58,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:58,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:58,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:58,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:58,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:58,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:58,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:58,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:58,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:14:59,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:15:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:15:03,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 864 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 04:15:32,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051347481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:32,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:32,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90, 79] total 175 [2024-11-28 04:15:32,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573478477] [2024-11-28 04:15:32,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:32,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-28 04:15:32,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:32,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-28 04:15:32,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=29976, Unknown=0, NotChecked=0, Total=30450 [2024-11-28 04:15:32,393 INFO L87 Difference]: Start difference. First operand 188 states and 194 transitions. Second operand has 175 states, 175 states have (on average 2.1085714285714285) internal successors, (369), 175 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:15:54,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:54,567 INFO L93 Difference]: Finished difference Result 331 states and 342 transitions. [2024-11-28 04:15:54,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-28 04:15:54,568 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 2.1085714285714285) internal successors, (369), 175 states have internal predecessors, (369), 0 states have call successors, (0), 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 187 [2024-11-28 04:15:54,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:54,570 INFO L225 Difference]: With dead ends: 331 [2024-11-28 04:15:54,570 INFO L226 Difference]: Without dead ends: 327 [2024-11-28 04:15:54,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4411 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=474, Invalid=29976, Unknown=0, NotChecked=0, Total=30450 [2024-11-28 04:15:54,572 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 23873 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 23874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:54,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 752 Invalid, 23874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 23873 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2024-11-28 04:15:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-28 04:15:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 297. [2024-11-28 04:15:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.0405405405405406) internal successors, (308), 296 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:15:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 308 transitions. [2024-11-28 04:15:54,947 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 308 transitions. Word has length 187 [2024-11-28 04:15:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:54,947 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 308 transitions. [2024-11-28 04:15:54,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 2.1085714285714285) internal successors, (369), 175 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:15:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 308 transitions. [2024-11-28 04:15:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-28 04:15:54,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:54,948 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:54,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 04:15:55,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:55,149 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:15:55,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:55,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1010846242, now seen corresponding path program 42 times [2024-11-28 04:15:55,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:55,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650356882] [2024-11-28 04:15:55,150 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:15:55,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:55,299 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-28 04:15:55,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 121 proven. 192 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 04:15:55,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650356882] [2024-11-28 04:15:55,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650356882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904338417] [2024-11-28 04:15:55,834 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:15:55,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:55,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:55,836 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:55,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 04:15:56,388 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-28 04:15:56,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:56,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:15:56,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 04:15:56,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 04:15:57,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904338417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:57,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:57,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-28 04:15:57,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847454028] [2024-11-28 04:15:57,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:57,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 04:15:57,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:57,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 04:15:57,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 04:15:57,159 INFO L87 Difference]: Start difference. First operand 297 states and 308 transitions. Second operand has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 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) [2024-11-28 04:15:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:59,632 INFO L93 Difference]: Finished difference Result 443 states and 462 transitions. [2024-11-28 04:15:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 04:15:59,633 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 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 189 [2024-11-28 04:15:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:59,635 INFO L225 Difference]: With dead ends: 443 [2024-11-28 04:15:59,635 INFO L226 Difference]: Without dead ends: 335 [2024-11-28 04:15:59,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 337 SyntacticMatches, 26 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1030, Invalid=3800, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 04:15:59,636 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 360 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:59,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 71 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:15:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-28 04:16:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 279. [2024-11-28 04:16:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.039568345323741) internal successors, (289), 278 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:00,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 289 transitions. [2024-11-28 04:16:00,078 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 289 transitions. Word has length 189 [2024-11-28 04:16:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:00,079 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 289 transitions. [2024-11-28 04:16:00,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 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) [2024-11-28 04:16:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 289 transitions. [2024-11-28 04:16:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-28 04:16:00,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:00,081 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:00,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-28 04:16:00,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 04:16:00,281 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:00,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:00,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1932699746, now seen corresponding path program 43 times [2024-11-28 04:16:00,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:00,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822302918] [2024-11-28 04:16:00,282 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:16:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 146 proven. 167 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 04:16:00,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822302918] [2024-11-28 04:16:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822302918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695067978] [2024-11-28 04:16:00,909 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:16:00,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:00,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:00,911 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:00,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ad16c7-3ff2-4449-9113-ec1c9851a664/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 04:16:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:01,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:16:01,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 04:16:01,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 04:16:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695067978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:02,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:02,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-28 04:16:02,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275874614] [2024-11-28 04:16:02,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:02,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 04:16:02,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:02,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 04:16:02,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 04:16:02,262 INFO L87 Difference]: Start difference. First operand 279 states and 289 transitions. Second operand has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 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)