./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.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_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87f1dffc4791cf25ae510fd8866e3e496425d62832b1b02adb55ef79c14eda4f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:26:45,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:26:45,211 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:26:45,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:26:45,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:26:45,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:26:45,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:26:45,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:26:45,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:26:45,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:26:45,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:26:45,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:26:45,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:26:45,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:26:45,237 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:26:45,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:26:45,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:26:45,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:26:45,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:26:45,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:26:45,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:26:45,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:26:45,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:26:45,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:26:45,238 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:26:45,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:26:45,238 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:26:45,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:26:45,238 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:26:45,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:26:45,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:26:45,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:26:45,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:26:45,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:26:45,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:26:45,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:26:45,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:26:45,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:26:45,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:26:45,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:26:45,240 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:26:45,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:26:45,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:26:45,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:26:45,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:26:45,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:26:45,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:26:45,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:26:45,240 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_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87f1dffc4791cf25ae510fd8866e3e496425d62832b1b02adb55ef79c14eda4f [2024-12-02 13:26:45,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:26:45,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:26:45,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:26:45,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:26:45,457 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:26:45,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-12-02 13:26:48,242 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/data/1ea86d3cf/c655aacc772a41019b2992ca2c1e4ea7/FLAGd77b5673c [2024-12-02 13:26:48,429 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:26:48,430 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-12-02 13:26:48,438 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/data/1ea86d3cf/c655aacc772a41019b2992ca2c1e4ea7/FLAGd77b5673c [2024-12-02 13:26:48,453 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/data/1ea86d3cf/c655aacc772a41019b2992ca2c1e4ea7 [2024-12-02 13:26:48,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:26:48,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:26:48,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:26:48,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:26:48,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:26:48,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48, skipping insertion in model container [2024-12-02 13:26:48,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,484 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:26:48,650 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_c65005a4-fcf7-488d-9208-fc6ee6df415b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4371,4384] [2024-12-02 13:26:48,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:26:48,681 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:26:48,714 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_c65005a4-fcf7-488d-9208-fc6ee6df415b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4371,4384] [2024-12-02 13:26:48,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:26:48,744 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:26:48,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48 WrapperNode [2024-12-02 13:26:48,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:26:48,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:26:48,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:26:48,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:26:48,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,784 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 366 [2024-12-02 13:26:48,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:26:48,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:26:48,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:26:48,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:26:48,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,794 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,808 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 13:26:48,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,815 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:26:48,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:26:48,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:26:48,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:26:48,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (1/1) ... [2024-12-02 13:26:48,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:26:48,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:26:48,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:26:48,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:26:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:26:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:26:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:26:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:26:48,973 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:26:48,975 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:26:49,297 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-12-02 13:26:49,297 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:26:49,307 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:26:49,307 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 13:26:49,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:26:49 BoogieIcfgContainer [2024-12-02 13:26:49,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:26:49,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:26:49,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:26:49,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:26:49,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:26:48" (1/3) ... [2024-12-02 13:26:49,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d07e08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:26:49, skipping insertion in model container [2024-12-02 13:26:49,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:48" (2/3) ... [2024-12-02 13:26:49,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d07e08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:26:49, skipping insertion in model container [2024-12-02 13:26:49,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:26:49" (3/3) ... [2024-12-02 13:26:49,316 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-12-02 13:26:49,327 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:26:49,328 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c that has 1 procedures, 85 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 13:26:49,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:26:49,378 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;@19ce432f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:26:49,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:26:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 13:26:49,385 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:49,386 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, 1, 1, 1, 1] [2024-12-02 13:26:49,386 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:49,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:49,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1258202004, now seen corresponding path program 1 times [2024-12-02 13:26:49,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:49,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275472979] [2024-12-02 13:26:49,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:49,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:49,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:49,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275472979] [2024-12-02 13:26:49,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275472979] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:49,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:49,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:26:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089482719] [2024-12-02 13:26:49,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:49,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:26:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:49,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:26:49,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:49,691 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:49,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:49,741 INFO L93 Difference]: Finished difference Result 199 states and 318 transitions. [2024-12-02 13:26:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:26:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-12-02 13:26:49,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:49,749 INFO L225 Difference]: With dead ends: 199 [2024-12-02 13:26:49,749 INFO L226 Difference]: Without dead ends: 128 [2024-12-02 13:26:49,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:49,754 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 101 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:49,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 300 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-12-02 13:26:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2024-12-02 13:26:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.504) internal successors, (188), 125 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 188 transitions. [2024-12-02 13:26:49,782 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 188 transitions. Word has length 37 [2024-12-02 13:26:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:49,782 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 188 transitions. [2024-12-02 13:26:49,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 188 transitions. [2024-12-02 13:26:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 13:26:49,784 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:49,784 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, 1, 1, 1, 1, 1] [2024-12-02 13:26:49,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:26:49,784 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:49,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2004783502, now seen corresponding path program 1 times [2024-12-02 13:26:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:49,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685000840] [2024-12-02 13:26:49,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:49,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:49,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685000840] [2024-12-02 13:26:49,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685000840] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:49,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:49,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:26:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708737161] [2024-12-02 13:26:49,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:49,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:26:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:49,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:26:49,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:49,885 INFO L87 Difference]: Start difference. First operand 126 states and 188 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:49,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:49,919 INFO L93 Difference]: Finished difference Result 306 states and 472 transitions. [2024-12-02 13:26:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:26:49,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 13:26:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:49,921 INFO L225 Difference]: With dead ends: 306 [2024-12-02 13:26:49,921 INFO L226 Difference]: Without dead ends: 200 [2024-12-02 13:26:49,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:49,922 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 81 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:49,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 254 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-12-02 13:26:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2024-12-02 13:26:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 197 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 301 transitions. [2024-12-02 13:26:49,937 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 301 transitions. Word has length 38 [2024-12-02 13:26:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:49,938 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 301 transitions. [2024-12-02 13:26:49,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 301 transitions. [2024-12-02 13:26:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 13:26:49,939 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:49,939 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, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:49,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:26:49,939 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:49,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:49,939 INFO L85 PathProgramCache]: Analyzing trace with hash 337157617, now seen corresponding path program 1 times [2024-12-02 13:26:49,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:49,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477142047] [2024-12-02 13:26:49,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:49,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:50,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477142047] [2024-12-02 13:26:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477142047] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:50,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:50,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:26:50,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222234103] [2024-12-02 13:26:50,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:50,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:26:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:50,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:26:50,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:50,020 INFO L87 Difference]: Start difference. First operand 198 states and 301 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:50,047 INFO L93 Difference]: Finished difference Result 490 states and 759 transitions. [2024-12-02 13:26:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:26:50,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-12-02 13:26:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:50,049 INFO L225 Difference]: With dead ends: 490 [2024-12-02 13:26:50,049 INFO L226 Difference]: Without dead ends: 312 [2024-12-02 13:26:50,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:50,051 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 76 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:50,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 239 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-12-02 13:26:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2024-12-02 13:26:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.5307443365695792) internal successors, (473), 309 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 473 transitions. [2024-12-02 13:26:50,086 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 473 transitions. Word has length 39 [2024-12-02 13:26:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:50,086 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 473 transitions. [2024-12-02 13:26:50,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 473 transitions. [2024-12-02 13:26:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 13:26:50,087 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:50,087 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:50,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:26:50,087 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:50,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1621587317, now seen corresponding path program 1 times [2024-12-02 13:26:50,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:50,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861391687] [2024-12-02 13:26:50,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:50,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861391687] [2024-12-02 13:26:50,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861391687] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:50,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:50,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:26:50,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388727747] [2024-12-02 13:26:50,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:50,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:26:50,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:50,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:26:50,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:26:50,214 INFO L87 Difference]: Start difference. First operand 310 states and 473 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2024-12-02 13:26:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:50,310 INFO L93 Difference]: Finished difference Result 1470 states and 2285 transitions. [2024-12-02 13:26:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:26:50,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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 40 [2024-12-02 13:26:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:50,315 INFO L225 Difference]: With dead ends: 1470 [2024-12-02 13:26:50,315 INFO L226 Difference]: Without dead ends: 1180 [2024-12-02 13:26:50,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:26:50,317 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 486 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:50,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 660 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:50,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2024-12-02 13:26:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 598. [2024-12-02 13:26:50,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.5226130653266332) internal successors, (909), 597 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 909 transitions. [2024-12-02 13:26:50,348 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 909 transitions. Word has length 40 [2024-12-02 13:26:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:50,348 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 909 transitions. [2024-12-02 13:26:50,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2024-12-02 13:26:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 909 transitions. [2024-12-02 13:26:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-02 13:26:50,349 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:50,349 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:50,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:26:50,349 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:50,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:50,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1289857042, now seen corresponding path program 1 times [2024-12-02 13:26:50,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:50,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609502581] [2024-12-02 13:26:50,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:50,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:50,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:50,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609502581] [2024-12-02 13:26:50,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609502581] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:50,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:50,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:26:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804426177] [2024-12-02 13:26:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:50,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:26:50,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:50,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:26:50,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:26:50,504 INFO L87 Difference]: Start difference. First operand 598 states and 909 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:50,573 INFO L93 Difference]: Finished difference Result 2068 states and 3144 transitions. [2024-12-02 13:26:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:26:50,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-12-02 13:26:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:50,579 INFO L225 Difference]: With dead ends: 2068 [2024-12-02 13:26:50,580 INFO L226 Difference]: Without dead ends: 1490 [2024-12-02 13:26:50,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:26:50,581 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 323 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:50,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 330 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2024-12-02 13:26:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1486. [2024-12-02 13:26:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 1.5063973063973064) internal successors, (2237), 1485 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2237 transitions. [2024-12-02 13:26:50,621 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2237 transitions. Word has length 41 [2024-12-02 13:26:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:50,621 INFO L471 AbstractCegarLoop]: Abstraction has 1486 states and 2237 transitions. [2024-12-02 13:26:50,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2237 transitions. [2024-12-02 13:26:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 13:26:50,623 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:50,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:50,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:26:50,623 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:50,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:50,624 INFO L85 PathProgramCache]: Analyzing trace with hash 97793413, now seen corresponding path program 1 times [2024-12-02 13:26:50,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:50,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412593787] [2024-12-02 13:26:50,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:50,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:50,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412593787] [2024-12-02 13:26:50,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412593787] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:50,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:50,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:26:50,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271873031] [2024-12-02 13:26:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:50,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:26:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:50,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:26:50,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:26:50,742 INFO L87 Difference]: Start difference. First operand 1486 states and 2237 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:50,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:50,949 INFO L93 Difference]: Finished difference Result 4418 states and 6671 transitions. [2024-12-02 13:26:50,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:26:50,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-12-02 13:26:50,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:50,960 INFO L225 Difference]: With dead ends: 4418 [2024-12-02 13:26:50,960 INFO L226 Difference]: Without dead ends: 2952 [2024-12-02 13:26:50,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:26:50,962 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:50,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 139 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:26:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2024-12-02 13:26:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2950. [2024-12-02 13:26:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2949 states have (on average 1.4991522550016956) internal successors, (4421), 2949 states have internal predecessors, (4421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 4421 transitions. [2024-12-02 13:26:51,055 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 4421 transitions. Word has length 43 [2024-12-02 13:26:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:51,056 INFO L471 AbstractCegarLoop]: Abstraction has 2950 states and 4421 transitions. [2024-12-02 13:26:51,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 4421 transitions. [2024-12-02 13:26:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 13:26:51,057 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:51,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:51,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:26:51,057 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:51,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:51,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1723958080, now seen corresponding path program 1 times [2024-12-02 13:26:51,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:51,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687055615] [2024-12-02 13:26:51,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:51,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:51,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687055615] [2024-12-02 13:26:51,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687055615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:51,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:51,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:26:51,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283516461] [2024-12-02 13:26:51,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:51,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:26:51,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:51,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:26:51,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:26:51,381 INFO L87 Difference]: Start difference. First operand 2950 states and 4421 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:51,421 INFO L93 Difference]: Finished difference Result 3144 states and 4710 transitions. [2024-12-02 13:26:51,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:26:51,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-12-02 13:26:51,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:51,432 INFO L225 Difference]: With dead ends: 3144 [2024-12-02 13:26:51,432 INFO L226 Difference]: Without dead ends: 3142 [2024-12-02 13:26:51,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:26:51,434 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:51,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2024-12-02 13:26:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 3142. [2024-12-02 13:26:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.4686405603311048) internal successors, (4613), 3141 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4613 transitions. [2024-12-02 13:26:51,536 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4613 transitions. Word has length 43 [2024-12-02 13:26:51,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:51,537 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4613 transitions. [2024-12-02 13:26:51,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:51,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4613 transitions. [2024-12-02 13:26:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 13:26:51,538 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:51,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:51,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:26:51,538 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:51,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:51,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1913665939, now seen corresponding path program 1 times [2024-12-02 13:26:51,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:51,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428443945] [2024-12-02 13:26:51,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:51,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:51,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:51,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428443945] [2024-12-02 13:26:51,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428443945] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:51,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:51,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:26:51,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287833678] [2024-12-02 13:26:51,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:51,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:26:51,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:51,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:26:51,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:51,603 INFO L87 Difference]: Start difference. First operand 3142 states and 4613 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:51,641 INFO L93 Difference]: Finished difference Result 7604 states and 11171 transitions. [2024-12-02 13:26:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:26:51,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-12-02 13:26:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:51,654 INFO L225 Difference]: With dead ends: 7604 [2024-12-02 13:26:51,654 INFO L226 Difference]: Without dead ends: 4482 [2024-12-02 13:26:51,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:51,658 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 66 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:51,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 236 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2024-12-02 13:26:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4480. [2024-12-02 13:26:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4479 states have (on average 1.4594775619557938) internal successors, (6537), 4479 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6537 transitions. [2024-12-02 13:26:51,758 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6537 transitions. Word has length 44 [2024-12-02 13:26:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:51,758 INFO L471 AbstractCegarLoop]: Abstraction has 4480 states and 6537 transitions. [2024-12-02 13:26:51,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6537 transitions. [2024-12-02 13:26:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 13:26:51,760 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:51,761 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:51,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:26:51,761 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:51,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:51,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1827424966, now seen corresponding path program 1 times [2024-12-02 13:26:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:51,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115940811] [2024-12-02 13:26:51,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:26:51,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:51,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115940811] [2024-12-02 13:26:51,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115940811] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:26:51,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769673991] [2024-12-02 13:26:51,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:51,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:26:51,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:26:51,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:26:51,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:26:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:52,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 13:26:52,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:26:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:52,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:26:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:53,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769673991] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:26:53,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:26:53,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-12-02 13:26:53,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141716728] [2024-12-02 13:26:53,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:26:53,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 13:26:53,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:53,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 13:26:53,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:26:53,364 INFO L87 Difference]: Start difference. First operand 4480 states and 6537 transitions. Second operand has 20 states, 20 states have (on average 8.5) internal successors, (170), 20 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:55,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:55,737 INFO L93 Difference]: Finished difference Result 25984 states and 37635 transitions. [2024-12-02 13:26:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-12-02 13:26:55,737 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.5) internal successors, (170), 20 states have internal predecessors, (170), 0 states have call successors, (0), 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 [2024-12-02 13:26:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:55,784 INFO L225 Difference]: With dead ends: 25984 [2024-12-02 13:26:55,784 INFO L226 Difference]: Without dead ends: 22010 [2024-12-02 13:26:55,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1910 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1239, Invalid=4923, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 13:26:55,791 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 2750 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2750 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:55,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2750 Valid, 1218 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 13:26:55,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22010 states. [2024-12-02 13:26:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22010 to 12320. [2024-12-02 13:26:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12320 states, 12319 states have (on average 1.4385096192872797) internal successors, (17721), 12319 states have internal predecessors, (17721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12320 states to 12320 states and 17721 transitions. [2024-12-02 13:26:56,007 INFO L78 Accepts]: Start accepts. Automaton has 12320 states and 17721 transitions. Word has length 61 [2024-12-02 13:26:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:56,007 INFO L471 AbstractCegarLoop]: Abstraction has 12320 states and 17721 transitions. [2024-12-02 13:26:56,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.5) internal successors, (170), 20 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 12320 states and 17721 transitions. [2024-12-02 13:26:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 13:26:56,010 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:56,010 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:56,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:26:56,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:26:56,210 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:56,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash 621000165, now seen corresponding path program 1 times [2024-12-02 13:26:56,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:56,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393921175] [2024-12-02 13:26:56,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:56,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:56,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393921175] [2024-12-02 13:26:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393921175] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:56,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:56,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:26:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152090447] [2024-12-02 13:26:56,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:56,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:26:56,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:56,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:26:56,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:56,256 INFO L87 Difference]: Start difference. First operand 12320 states and 17721 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:56,290 INFO L93 Difference]: Finished difference Result 19232 states and 27527 transitions. [2024-12-02 13:26:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:26:56,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 13:26:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:56,307 INFO L225 Difference]: With dead ends: 19232 [2024-12-02 13:26:56,307 INFO L226 Difference]: Without dead ends: 12751 [2024-12-02 13:26:56,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:56,312 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 67 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:56,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 265 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12751 states. [2024-12-02 13:26:56,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12751 to 12409. [2024-12-02 13:26:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12409 states, 12408 states have (on average 1.4104609929078014) internal successors, (17501), 12408 states have internal predecessors, (17501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:56,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12409 states to 12409 states and 17501 transitions. [2024-12-02 13:26:56,451 INFO L78 Accepts]: Start accepts. Automaton has 12409 states and 17501 transitions. Word has length 62 [2024-12-02 13:26:56,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:56,452 INFO L471 AbstractCegarLoop]: Abstraction has 12409 states and 17501 transitions. [2024-12-02 13:26:56,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:56,452 INFO L276 IsEmpty]: Start isEmpty. Operand 12409 states and 17501 transitions. [2024-12-02 13:26:56,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 13:26:56,454 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:56,454 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:56,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:26:56,454 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:56,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2941002, now seen corresponding path program 1 times [2024-12-02 13:26:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976878514] [2024-12-02 13:26:56,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:56,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:56,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976878514] [2024-12-02 13:26:56,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976878514] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:56,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:56,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:26:56,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110006523] [2024-12-02 13:26:56,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:56,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:26:56,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:56,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:26:56,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:56,495 INFO L87 Difference]: Start difference. First operand 12409 states and 17501 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:56,543 INFO L93 Difference]: Finished difference Result 29480 states and 41367 transitions. [2024-12-02 13:26:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:26:56,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 13:26:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:56,565 INFO L225 Difference]: With dead ends: 29480 [2024-12-02 13:26:56,565 INFO L226 Difference]: Without dead ends: 20145 [2024-12-02 13:26:56,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:56,572 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 63 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:56,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 222 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20145 states. [2024-12-02 13:26:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20145 to 20094. [2024-12-02 13:26:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20094 states, 20093 states have (on average 1.3845120191111333) internal successors, (27819), 20093 states have internal predecessors, (27819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20094 states to 20094 states and 27819 transitions. [2024-12-02 13:26:56,791 INFO L78 Accepts]: Start accepts. Automaton has 20094 states and 27819 transitions. Word has length 62 [2024-12-02 13:26:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:56,791 INFO L471 AbstractCegarLoop]: Abstraction has 20094 states and 27819 transitions. [2024-12-02 13:26:56,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 20094 states and 27819 transitions. [2024-12-02 13:26:56,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 13:26:56,840 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:56,840 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:56,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:26:56,840 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:56,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 954450183, now seen corresponding path program 1 times [2024-12-02 13:26:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082291142] [2024-12-02 13:26:56,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:56,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:56,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082291142] [2024-12-02 13:26:56,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082291142] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:56,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:56,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:26:56,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815456515] [2024-12-02 13:26:56,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:56,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:26:56,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:56,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:26:56,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:56,896 INFO L87 Difference]: Start difference. First operand 20094 states and 27819 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:56,980 INFO L93 Difference]: Finished difference Result 40449 states and 55859 transitions. [2024-12-02 13:26:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:26:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 13:26:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:57,015 INFO L225 Difference]: With dead ends: 40449 [2024-12-02 13:26:57,015 INFO L226 Difference]: Without dead ends: 22776 [2024-12-02 13:26:57,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:57,029 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 64 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:57,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 266 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:57,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22776 states. [2024-12-02 13:26:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22776 to 18973. [2024-12-02 13:26:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18973 states, 18972 states have (on average 1.3664874551971327) internal successors, (25925), 18972 states have internal predecessors, (25925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18973 states to 18973 states and 25925 transitions. [2024-12-02 13:26:57,317 INFO L78 Accepts]: Start accepts. Automaton has 18973 states and 25925 transitions. Word has length 62 [2024-12-02 13:26:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:57,317 INFO L471 AbstractCegarLoop]: Abstraction has 18973 states and 25925 transitions. [2024-12-02 13:26:57,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 18973 states and 25925 transitions. [2024-12-02 13:26:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 13:26:57,321 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:57,321 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:57,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:26:57,321 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:57,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:57,321 INFO L85 PathProgramCache]: Analyzing trace with hash -922232594, now seen corresponding path program 1 times [2024-12-02 13:26:57,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:57,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804056389] [2024-12-02 13:26:57,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:57,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:26:57,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:57,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804056389] [2024-12-02 13:26:57,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804056389] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:57,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:57,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:26:57,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916918838] [2024-12-02 13:26:57,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:57,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:26:57,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:57,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:26:57,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:26:57,446 INFO L87 Difference]: Start difference. First operand 18973 states and 25925 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:57,590 INFO L93 Difference]: Finished difference Result 35411 states and 48911 transitions. [2024-12-02 13:26:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:26:57,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 13:26:57,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:57,654 INFO L225 Difference]: With dead ends: 35411 [2024-12-02 13:26:57,654 INFO L226 Difference]: Without dead ends: 29996 [2024-12-02 13:26:57,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:26:57,666 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 341 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:57,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 538 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29996 states. [2024-12-02 13:26:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29996 to 24182. [2024-12-02 13:26:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24182 states, 24181 states have (on average 1.3661966006368635) internal successors, (33036), 24181 states have internal predecessors, (33036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24182 states to 24182 states and 33036 transitions. [2024-12-02 13:26:58,059 INFO L78 Accepts]: Start accepts. Automaton has 24182 states and 33036 transitions. Word has length 62 [2024-12-02 13:26:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:58,059 INFO L471 AbstractCegarLoop]: Abstraction has 24182 states and 33036 transitions. [2024-12-02 13:26:58,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 24182 states and 33036 transitions. [2024-12-02 13:26:58,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 13:26:58,062 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:58,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:58,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:26:58,063 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:58,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash -237073659, now seen corresponding path program 1 times [2024-12-02 13:26:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:58,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416499630] [2024-12-02 13:26:58,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:26:58,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:58,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416499630] [2024-12-02 13:26:58,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416499630] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:58,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:58,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:26:58,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640051110] [2024-12-02 13:26:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:58,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:26:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:58,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:26:58,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:26:58,172 INFO L87 Difference]: Start difference. First operand 24182 states and 33036 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:58,296 INFO L93 Difference]: Finished difference Result 39768 states and 54850 transitions. [2024-12-02 13:26:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:26:58,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 13:26:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:58,339 INFO L225 Difference]: With dead ends: 39768 [2024-12-02 13:26:58,339 INFO L226 Difference]: Without dead ends: 33516 [2024-12-02 13:26:58,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:26:58,351 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 334 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:58,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 590 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:58,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33516 states. [2024-12-02 13:26:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33516 to 29608. [2024-12-02 13:26:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29608 states, 29607 states have (on average 1.3639004289526127) internal successors, (40381), 29607 states have internal predecessors, (40381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29608 states to 29608 states and 40381 transitions. [2024-12-02 13:26:58,789 INFO L78 Accepts]: Start accepts. Automaton has 29608 states and 40381 transitions. Word has length 62 [2024-12-02 13:26:58,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:58,790 INFO L471 AbstractCegarLoop]: Abstraction has 29608 states and 40381 transitions. [2024-12-02 13:26:58,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:58,790 INFO L276 IsEmpty]: Start isEmpty. Operand 29608 states and 40381 transitions. [2024-12-02 13:26:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 13:26:58,793 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:58,793 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:58,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:26:58,794 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:58,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:58,794 INFO L85 PathProgramCache]: Analyzing trace with hash 901849755, now seen corresponding path program 1 times [2024-12-02 13:26:58,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:58,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601027526] [2024-12-02 13:26:58,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:26:58,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:58,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601027526] [2024-12-02 13:26:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601027526] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:58,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:58,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:26:58,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365358244] [2024-12-02 13:26:58,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:58,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:26:58,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:58,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:26:58,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:58,845 INFO L87 Difference]: Start difference. First operand 29608 states and 40381 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:59,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:59,030 INFO L93 Difference]: Finished difference Result 57010 states and 77803 transitions. [2024-12-02 13:26:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:26:59,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 13:26:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:59,059 INFO L225 Difference]: With dead ends: 57010 [2024-12-02 13:26:59,059 INFO L226 Difference]: Without dead ends: 27459 [2024-12-02 13:26:59,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:26:59,077 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:59,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 126 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:26:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27459 states. [2024-12-02 13:26:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27459 to 26424. [2024-12-02 13:26:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26424 states, 26423 states have (on average 1.3475381296597662) internal successors, (35606), 26423 states have internal predecessors, (35606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 35606 transitions. [2024-12-02 13:26:59,435 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 35606 transitions. Word has length 63 [2024-12-02 13:26:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:26:59,435 INFO L471 AbstractCegarLoop]: Abstraction has 26424 states and 35606 transitions. [2024-12-02 13:26:59,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 35606 transitions. [2024-12-02 13:26:59,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 13:26:59,437 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:26:59,437 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:26:59,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:26:59,438 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:26:59,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:26:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash -121604344, now seen corresponding path program 1 times [2024-12-02 13:26:59,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:26:59,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238535235] [2024-12-02 13:26:59,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:26:59,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:26:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:26:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:26:59,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:26:59,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238535235] [2024-12-02 13:26:59,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238535235] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:26:59,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:26:59,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:26:59,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106071687] [2024-12-02 13:26:59,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:26:59,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:26:59,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:59,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:26:59,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:26:59,528 INFO L87 Difference]: Start difference. First operand 26424 states and 35606 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:26:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:26:59,666 INFO L93 Difference]: Finished difference Result 43644 states and 59363 transitions. [2024-12-02 13:26:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:26:59,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 13:26:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:26:59,699 INFO L225 Difference]: With dead ends: 43644 [2024-12-02 13:26:59,699 INFO L226 Difference]: Without dead ends: 36266 [2024-12-02 13:26:59,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:26:59,710 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 323 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:26:59,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 534 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:26:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36266 states. [2024-12-02 13:27:00,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36266 to 32000. [2024-12-02 13:27:00,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32000 states, 31999 states have (on average 1.345760805025157) internal successors, (43063), 31999 states have internal predecessors, (43063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32000 states to 32000 states and 43063 transitions. [2024-12-02 13:27:00,127 INFO L78 Accepts]: Start accepts. Automaton has 32000 states and 43063 transitions. Word has length 63 [2024-12-02 13:27:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:00,127 INFO L471 AbstractCegarLoop]: Abstraction has 32000 states and 43063 transitions. [2024-12-02 13:27:00,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 32000 states and 43063 transitions. [2024-12-02 13:27:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 13:27:00,131 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:00,131 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-12-02 13:27:00,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:27:00,131 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:00,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:00,131 INFO L85 PathProgramCache]: Analyzing trace with hash 746654310, now seen corresponding path program 1 times [2024-12-02 13:27:00,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:00,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291347888] [2024-12-02 13:27:00,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:00,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:27:00,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:00,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291347888] [2024-12-02 13:27:00,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291347888] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:00,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:00,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:27:00,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582518835] [2024-12-02 13:27:00,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:00,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:27:00,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:00,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:27:00,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:27:00,239 INFO L87 Difference]: Start difference. First operand 32000 states and 43063 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:00,528 INFO L93 Difference]: Finished difference Result 73686 states and 98989 transitions. [2024-12-02 13:27:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:27:00,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 67 [2024-12-02 13:27:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:00,580 INFO L225 Difference]: With dead ends: 73686 [2024-12-02 13:27:00,580 INFO L226 Difference]: Without dead ends: 41748 [2024-12-02 13:27:00,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:27:00,603 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 437 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:00,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 141 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:27:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41748 states. [2024-12-02 13:27:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41748 to 41290. [2024-12-02 13:27:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41290 states, 41289 states have (on average 1.3309598198067283) internal successors, (54954), 41289 states have internal predecessors, (54954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41290 states to 41290 states and 54954 transitions. [2024-12-02 13:27:01,067 INFO L78 Accepts]: Start accepts. Automaton has 41290 states and 54954 transitions. Word has length 67 [2024-12-02 13:27:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:01,067 INFO L471 AbstractCegarLoop]: Abstraction has 41290 states and 54954 transitions. [2024-12-02 13:27:01,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:01,067 INFO L276 IsEmpty]: Start isEmpty. Operand 41290 states and 54954 transitions. [2024-12-02 13:27:01,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 13:27:01,069 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:01,069 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-12-02 13:27:01,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 13:27:01,070 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:01,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:01,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1698199029, now seen corresponding path program 1 times [2024-12-02 13:27:01,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:01,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270384054] [2024-12-02 13:27:01,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:01,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:01,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:01,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270384054] [2024-12-02 13:27:01,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270384054] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:27:01,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770912410] [2024-12-02 13:27:01,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:01,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:27:01,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:27:01,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:27:01,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:27:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:01,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:27:01,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:27:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:01,480 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:27:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:01,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770912410] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:27:01,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:27:01,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 13:27:01,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830294502] [2024-12-02 13:27:01,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:27:01,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:27:01,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:01,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:27:01,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:27:01,577 INFO L87 Difference]: Start difference. First operand 41290 states and 54954 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:01,938 INFO L93 Difference]: Finished difference Result 95797 states and 127788 transitions. [2024-12-02 13:27:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:27:01,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 13:27:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:01,988 INFO L225 Difference]: With dead ends: 95797 [2024-12-02 13:27:01,988 INFO L226 Difference]: Without dead ends: 71523 [2024-12-02 13:27:02,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:27:02,010 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 836 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:02,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 349 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:27:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71523 states. [2024-12-02 13:27:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71523 to 49309. [2024-12-02 13:27:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49309 states, 49308 states have (on average 1.3309604932262513) internal successors, (65627), 49308 states have internal predecessors, (65627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:02,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49309 states to 49309 states and 65627 transitions. [2024-12-02 13:27:02,544 INFO L78 Accepts]: Start accepts. Automaton has 49309 states and 65627 transitions. Word has length 67 [2024-12-02 13:27:02,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:02,544 INFO L471 AbstractCegarLoop]: Abstraction has 49309 states and 65627 transitions. [2024-12-02 13:27:02,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:02,544 INFO L276 IsEmpty]: Start isEmpty. Operand 49309 states and 65627 transitions. [2024-12-02 13:27:02,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 13:27:02,546 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:02,546 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-12-02 13:27:02,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:27:02,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 13:27:02,747 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:02,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2073252700, now seen corresponding path program 1 times [2024-12-02 13:27:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:02,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444845217] [2024-12-02 13:27:02,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:02,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:02,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:02,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444845217] [2024-12-02 13:27:02,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444845217] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:27:02,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260507947] [2024-12-02 13:27:02,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:02,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:27:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:27:02,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:27:02,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:27:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:02,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:27:02,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:27:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:03,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:27:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:03,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260507947] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:27:03,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:27:03,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 13:27:03,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281562209] [2024-12-02 13:27:03,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:27:03,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:27:03,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:03,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:27:03,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:27:03,343 INFO L87 Difference]: Start difference. First operand 49309 states and 65627 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:03,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:03,667 INFO L93 Difference]: Finished difference Result 90142 states and 119455 transitions. [2024-12-02 13:27:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:27:03,667 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 13:27:03,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:03,721 INFO L225 Difference]: With dead ends: 90142 [2024-12-02 13:27:03,721 INFO L226 Difference]: Without dead ends: 65208 [2024-12-02 13:27:03,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:27:03,740 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 421 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:03,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 428 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:27:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65208 states. [2024-12-02 13:27:04,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65208 to 53463. [2024-12-02 13:27:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53463 states, 53462 states have (on average 1.3266806329729528) internal successors, (70927), 53462 states have internal predecessors, (70927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53463 states to 53463 states and 70927 transitions. [2024-12-02 13:27:04,366 INFO L78 Accepts]: Start accepts. Automaton has 53463 states and 70927 transitions. Word has length 67 [2024-12-02 13:27:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:04,367 INFO L471 AbstractCegarLoop]: Abstraction has 53463 states and 70927 transitions. [2024-12-02 13:27:04,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 53463 states and 70927 transitions. [2024-12-02 13:27:04,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 13:27:04,371 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:04,371 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-12-02 13:27:04,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:27:04,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:27:04,572 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:04,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1010003109, now seen corresponding path program 1 times [2024-12-02 13:27:04,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:04,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319009566] [2024-12-02 13:27:04,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:04,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:04,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319009566] [2024-12-02 13:27:04,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319009566] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:27:04,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486093290] [2024-12-02 13:27:04,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:04,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:27:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:27:04,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:27:04,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:27:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:04,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:27:04,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:27:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:04,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:27:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:05,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486093290] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:27:05,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:27:05,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 13:27:05,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573186547] [2024-12-02 13:27:05,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:27:05,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:27:05,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:05,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:27:05,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:27:05,098 INFO L87 Difference]: Start difference. First operand 53463 states and 70927 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:05,529 INFO L93 Difference]: Finished difference Result 102816 states and 135980 transitions. [2024-12-02 13:27:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:27:05,529 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 13:27:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:05,576 INFO L225 Difference]: With dead ends: 102816 [2024-12-02 13:27:05,577 INFO L226 Difference]: Without dead ends: 62867 [2024-12-02 13:27:05,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:27:05,595 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 651 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:05,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 276 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:27:05,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62867 states. [2024-12-02 13:27:06,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62867 to 53856. [2024-12-02 13:27:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53856 states, 53855 states have (on average 1.3217528548881254) internal successors, (71183), 53855 states have internal predecessors, (71183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53856 states to 53856 states and 71183 transitions. [2024-12-02 13:27:06,186 INFO L78 Accepts]: Start accepts. Automaton has 53856 states and 71183 transitions. Word has length 68 [2024-12-02 13:27:06,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:06,186 INFO L471 AbstractCegarLoop]: Abstraction has 53856 states and 71183 transitions. [2024-12-02 13:27:06,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 53856 states and 71183 transitions. [2024-12-02 13:27:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 13:27:06,189 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:06,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1] [2024-12-02 13:27:06,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:27:06,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:27:06,390 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:06,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1497418122, now seen corresponding path program 1 times [2024-12-02 13:27:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:06,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140010320] [2024-12-02 13:27:06,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:06,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:06,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140010320] [2024-12-02 13:27:06,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140010320] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:27:06,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254553358] [2024-12-02 13:27:06,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:06,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:27:06,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:27:06,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:27:06,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:27:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:06,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:27:06,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:27:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:07,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:27:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:07,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254553358] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:27:07,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:27:07,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-12-02 13:27:07,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848563488] [2024-12-02 13:27:07,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:27:07,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 13:27:07,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:07,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 13:27:07,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:27:07,599 INFO L87 Difference]: Start difference. First operand 53856 states and 71183 transitions. Second operand has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:08,747 INFO L93 Difference]: Finished difference Result 229017 states and 302367 transitions. [2024-12-02 13:27:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 13:27:08,748 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 13:27:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:08,903 INFO L225 Difference]: With dead ends: 229017 [2024-12-02 13:27:08,903 INFO L226 Difference]: Without dead ends: 175048 [2024-12-02 13:27:08,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1294, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 13:27:08,934 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 1241 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:08,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1002 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:27:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175048 states. [2024-12-02 13:27:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175048 to 105431. [2024-12-02 13:27:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105431 states, 105430 states have (on average 1.3089917480792943) internal successors, (138007), 105430 states have internal predecessors, (138007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105431 states to 105431 states and 138007 transitions. [2024-12-02 13:27:10,302 INFO L78 Accepts]: Start accepts. Automaton has 105431 states and 138007 transitions. Word has length 69 [2024-12-02 13:27:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:10,302 INFO L471 AbstractCegarLoop]: Abstraction has 105431 states and 138007 transitions. [2024-12-02 13:27:10,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:27:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 105431 states and 138007 transitions. [2024-12-02 13:27:10,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 13:27:10,307 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:10,307 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1] [2024-12-02 13:27:10,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:27:10,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:27:10,508 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:10,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:10,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1871560551, now seen corresponding path program 1 times [2024-12-02 13:27:10,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:10,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841984653] [2024-12-02 13:27:10,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:10,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:10,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841984653] [2024-12-02 13:27:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841984653] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:27:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983886421] [2024-12-02 13:27:10,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:10,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:27:10,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:27:10,725 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:27:10,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:27:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:10,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 13:27:10,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:27:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:14,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:27:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:27:15,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983886421] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:27:15,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:27:15,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 17] total 41 [2024-12-02 13:27:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592486072] [2024-12-02 13:27:15,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:27:15,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 13:27:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:15,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 13:27:15,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1456, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 13:27:15,700 INFO L87 Difference]: Start difference. First operand 105431 states and 138007 transitions. Second operand has 41 states, 41 states have (on average 4.560975609756097) internal successors, (187), 41 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:30:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:30:49,127 INFO L93 Difference]: Finished difference Result 1265564 states and 1626706 transitions. [2024-12-02 13:30:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1837 states. [2024-12-02 13:30:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.560975609756097) internal successors, (187), 41 states have internal predecessors, (187), 0 states have call successors, (0), 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 69 [2024-12-02 13:30:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:30:50,999 INFO L225 Difference]: With dead ends: 1265564 [2024-12-02 13:30:50,999 INFO L226 Difference]: Without dead ends: 1171958 [2024-12-02 13:30:51,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1980 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1873 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822454 ImplicationChecksByTransitivity, 196.0s TimeCoverageRelationStatistics Valid=275378, Invalid=3238372, Unknown=0, NotChecked=0, Total=3513750 [2024-12-02 13:30:51,572 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 27247 mSDsluCounter, 5675 mSDsCounter, 0 mSdLazyCounter, 10338 mSolverCounterSat, 710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27247 SdHoareTripleChecker+Valid, 5886 SdHoareTripleChecker+Invalid, 11048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 10338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:30:51,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27247 Valid, 5886 Invalid, 11048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [710 Valid, 10338 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-12-02 13:30:52,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171958 states. [2024-12-02 13:30:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171958 to 317230. [2024-12-02 13:30:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317230 states, 317229 states have (on average 1.310491789842669) internal successors, (415726), 317229 states have internal predecessors, (415726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:00,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317230 states to 317230 states and 415726 transitions. [2024-12-02 13:31:00,077 INFO L78 Accepts]: Start accepts. Automaton has 317230 states and 415726 transitions. Word has length 69 [2024-12-02 13:31:00,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:00,078 INFO L471 AbstractCegarLoop]: Abstraction has 317230 states and 415726 transitions. [2024-12-02 13:31:00,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.560975609756097) internal successors, (187), 41 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:00,078 INFO L276 IsEmpty]: Start isEmpty. Operand 317230 states and 415726 transitions. [2024-12-02 13:31:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 13:31:00,082 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:00,082 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1] [2024-12-02 13:31:00,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 13:31:00,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:31:00,283 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:00,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash 30251444, now seen corresponding path program 1 times [2024-12-02 13:31:00,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:00,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967629301] [2024-12-02 13:31:00,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:00,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 13:31:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:00,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967629301] [2024-12-02 13:31:00,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967629301] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:00,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:00,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:31:00,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812228164] [2024-12-02 13:31:00,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:00,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:00,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:00,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:00,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:00,309 INFO L87 Difference]: Start difference. First operand 317230 states and 415726 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:01,866 INFO L93 Difference]: Finished difference Result 565969 states and 742537 transitions. [2024-12-02 13:31:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:01,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 13:31:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:02,120 INFO L225 Difference]: With dead ends: 565969 [2024-12-02 13:31:02,120 INFO L226 Difference]: Without dead ends: 248793 [2024-12-02 13:31:02,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:02,186 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 84 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:02,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 130 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:31:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248793 states. [2024-12-02 13:31:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248793 to 241620. [2024-12-02 13:31:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241620 states, 241619 states have (on average 1.296905458593902) internal successors, (313357), 241619 states have internal predecessors, (313357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241620 states to 241620 states and 313357 transitions. [2024-12-02 13:31:05,254 INFO L78 Accepts]: Start accepts. Automaton has 241620 states and 313357 transitions. Word has length 70 [2024-12-02 13:31:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:05,254 INFO L471 AbstractCegarLoop]: Abstraction has 241620 states and 313357 transitions. [2024-12-02 13:31:05,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 241620 states and 313357 transitions. [2024-12-02 13:31:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 13:31:05,270 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:05,270 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:05,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 13:31:05,270 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:05,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:05,271 INFO L85 PathProgramCache]: Analyzing trace with hash 149050758, now seen corresponding path program 1 times [2024-12-02 13:31:05,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:05,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211508865] [2024-12-02 13:31:05,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:05,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 13:31:05,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:05,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211508865] [2024-12-02 13:31:05,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211508865] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:05,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:05,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:31:05,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132624253] [2024-12-02 13:31:05,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:05,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:05,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:05,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:05,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:05,310 INFO L87 Difference]: Start difference. First operand 241620 states and 313357 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:05,803 INFO L93 Difference]: Finished difference Result 297671 states and 385214 transitions. [2024-12-02 13:31:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-12-02 13:31:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:06,272 INFO L225 Difference]: With dead ends: 297671 [2024-12-02 13:31:06,272 INFO L226 Difference]: Without dead ends: 175879 [2024-12-02 13:31:06,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:06,318 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 50 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:06,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 271 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:31:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175879 states. [2024-12-02 13:31:07,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175879 to 153758. [2024-12-02 13:31:07,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153758 states, 153757 states have (on average 1.2751484485259208) internal successors, (196063), 153757 states have internal predecessors, (196063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153758 states to 153758 states and 196063 transitions. [2024-12-02 13:31:08,239 INFO L78 Accepts]: Start accepts. Automaton has 153758 states and 196063 transitions. Word has length 93 [2024-12-02 13:31:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:08,239 INFO L471 AbstractCegarLoop]: Abstraction has 153758 states and 196063 transitions. [2024-12-02 13:31:08,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 153758 states and 196063 transitions. [2024-12-02 13:31:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 13:31:08,251 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:08,251 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:08,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 13:31:08,251 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:08,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1755967316, now seen corresponding path program 2 times [2024-12-02 13:31:08,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:08,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933886514] [2024-12-02 13:31:08,252 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:31:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:08,284 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:31:08,284 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:31:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:31:08,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933886514] [2024-12-02 13:31:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933886514] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:08,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:08,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:31:08,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064247530] [2024-12-02 13:31:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:08,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:08,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:08,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:08,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:08,345 INFO L87 Difference]: Start difference. First operand 153758 states and 196063 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:08,848 INFO L93 Difference]: Finished difference Result 292513 states and 371696 transitions. [2024-12-02 13:31:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:08,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-12-02 13:31:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:08,973 INFO L225 Difference]: With dead ends: 292513 [2024-12-02 13:31:08,973 INFO L226 Difference]: Without dead ends: 138809 [2024-12-02 13:31:09,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:09,033 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 54 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:09,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 238 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:31:09,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138809 states. [2024-12-02 13:31:10,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138809 to 129314. [2024-12-02 13:31:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129314 states, 129313 states have (on average 1.247152258473626) internal successors, (161273), 129313 states have internal predecessors, (161273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129314 states to 129314 states and 161273 transitions. [2024-12-02 13:31:10,585 INFO L78 Accepts]: Start accepts. Automaton has 129314 states and 161273 transitions. Word has length 95 [2024-12-02 13:31:10,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:10,585 INFO L471 AbstractCegarLoop]: Abstraction has 129314 states and 161273 transitions. [2024-12-02 13:31:10,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 129314 states and 161273 transitions. [2024-12-02 13:31:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 13:31:10,601 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:10,601 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:10,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 13:31:10,601 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:10,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash 785208085, now seen corresponding path program 2 times [2024-12-02 13:31:10,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:10,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710470035] [2024-12-02 13:31:10,601 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:31:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:10,634 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:31:10,634 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:31:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 13:31:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:10,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710470035] [2024-12-02 13:31:10,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710470035] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:10,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:10,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:31:10,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215111748] [2024-12-02 13:31:10,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:10,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:10,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:10,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:10,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:10,694 INFO L87 Difference]: Start difference. First operand 129314 states and 161273 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:11,337 INFO L93 Difference]: Finished difference Result 196657 states and 245966 transitions. [2024-12-02 13:31:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:11,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 [2024-12-02 13:31:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:11,390 INFO L225 Difference]: With dead ends: 196657 [2024-12-02 13:31:11,390 INFO L226 Difference]: Without dead ends: 67397 [2024-12-02 13:31:11,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:11,414 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 45 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:11,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 219 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:31:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67397 states. [2024-12-02 13:31:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67397 to 66247. [2024-12-02 13:31:11,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66247 states, 66246 states have (on average 1.234670772574948) internal successors, (81792), 66246 states have internal predecessors, (81792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66247 states to 66247 states and 81792 transitions. [2024-12-02 13:31:11,919 INFO L78 Accepts]: Start accepts. Automaton has 66247 states and 81792 transitions. Word has length 101 [2024-12-02 13:31:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:11,919 INFO L471 AbstractCegarLoop]: Abstraction has 66247 states and 81792 transitions. [2024-12-02 13:31:11,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 66247 states and 81792 transitions. [2024-12-02 13:31:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 13:31:11,924 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:11,924 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-12-02 13:31:11,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 13:31:11,925 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:11,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:11,925 INFO L85 PathProgramCache]: Analyzing trace with hash -51974689, now seen corresponding path program 1 times [2024-12-02 13:31:11,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:11,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515795233] [2024-12-02 13:31:11,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 13:31:12,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515795233] [2024-12-02 13:31:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515795233] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:31:12,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386552716] [2024-12-02 13:31:12,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:12,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:31:12,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:31:12,308 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:31:12,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:31:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:12,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 13:31:12,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:31:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:31:12,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:31:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:31:13,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386552716] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:31:13,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:31:13,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 21 [2024-12-02 13:31:13,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384485298] [2024-12-02 13:31:13,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:31:13,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 13:31:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:13,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 13:31:13,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:31:13,414 INFO L87 Difference]: Start difference. First operand 66247 states and 81792 transitions. Second operand has 21 states, 21 states have (on average 12.285714285714286) internal successors, (258), 21 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:14,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:14,779 INFO L93 Difference]: Finished difference Result 251078 states and 312705 transitions. [2024-12-02 13:31:14,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 13:31:14,779 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.285714285714286) internal successors, (258), 21 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-12-02 13:31:14,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:14,932 INFO L225 Difference]: With dead ends: 251078 [2024-12-02 13:31:14,932 INFO L226 Difference]: Without dead ends: 184857 [2024-12-02 13:31:14,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=700, Invalid=1750, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 13:31:14,962 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 3574 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3574 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:14,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3574 Valid, 2281 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:31:15,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184857 states. [2024-12-02 13:31:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184857 to 171639. [2024-12-02 13:31:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171639 states, 171638 states have (on average 1.2296461156620329) internal successors, (211054), 171638 states have internal predecessors, (211054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171639 states to 171639 states and 211054 transitions. [2024-12-02 13:31:16,604 INFO L78 Accepts]: Start accepts. Automaton has 171639 states and 211054 transitions. Word has length 102 [2024-12-02 13:31:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:16,604 INFO L471 AbstractCegarLoop]: Abstraction has 171639 states and 211054 transitions. [2024-12-02 13:31:16,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.285714285714286) internal successors, (258), 21 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 171639 states and 211054 transitions. [2024-12-02 13:31:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:31:16,614 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:16,614 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:16,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:31:16,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:31:16,815 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:16,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash -849882575, now seen corresponding path program 1 times [2024-12-02 13:31:16,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:16,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799636612] [2024-12-02 13:31:16,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 13:31:16,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:16,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799636612] [2024-12-02 13:31:16,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799636612] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:16,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:16,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:31:16,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079426062] [2024-12-02 13:31:16,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:16,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:31:16,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:16,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:31:16,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:31:16,890 INFO L87 Difference]: Start difference. First operand 171639 states and 211054 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:17,546 INFO L93 Difference]: Finished difference Result 290479 states and 358439 transitions. [2024-12-02 13:31:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:31:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-12-02 13:31:17,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:17,727 INFO L225 Difference]: With dead ends: 290479 [2024-12-02 13:31:17,727 INFO L226 Difference]: Without dead ends: 168261 [2024-12-02 13:31:17,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:31:17,794 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 66 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:17,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 305 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:31:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168261 states. [2024-12-02 13:31:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168261 to 145809. [2024-12-02 13:31:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145809 states, 145808 states have (on average 1.2180058707341161) internal successors, (177595), 145808 states have internal predecessors, (177595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145809 states to 145809 states and 177595 transitions. [2024-12-02 13:31:19,452 INFO L78 Accepts]: Start accepts. Automaton has 145809 states and 177595 transitions. Word has length 114 [2024-12-02 13:31:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:19,452 INFO L471 AbstractCegarLoop]: Abstraction has 145809 states and 177595 transitions. [2024-12-02 13:31:19,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 145809 states and 177595 transitions. [2024-12-02 13:31:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:31:19,457 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:19,458 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:19,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 13:31:19,458 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:19,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 896544086, now seen corresponding path program 1 times [2024-12-02 13:31:19,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:19,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057801139] [2024-12-02 13:31:19,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:19,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:31:20,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:20,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057801139] [2024-12-02 13:31:20,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057801139] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:31:20,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121116964] [2024-12-02 13:31:20,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:20,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:31:20,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:31:20,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:31:20,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:31:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:20,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 13:31:20,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:31:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 27 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:31:21,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:31:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:31:22,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121116964] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:31:22,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:31:22,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 14] total 42 [2024-12-02 13:31:22,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022536791] [2024-12-02 13:31:22,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:31:22,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 13:31:22,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:22,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 13:31:22,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1578, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 13:31:22,403 INFO L87 Difference]: Start difference. First operand 145809 states and 177595 transitions. Second operand has 42 states, 42 states have (on average 7.785714285714286) internal successors, (327), 42 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:34,594 INFO L93 Difference]: Finished difference Result 386855 states and 467877 transitions. [2024-12-02 13:31:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-12-02 13:31:34,594 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.785714285714286) internal successors, (327), 42 states have internal predecessors, (327), 0 states have call successors, (0), 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 114 [2024-12-02 13:31:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:34,886 INFO L225 Difference]: With dead ends: 386855 [2024-12-02 13:31:34,886 INFO L226 Difference]: Without dead ends: 307137 [2024-12-02 13:31:34,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13624 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=4641, Invalid=33971, Unknown=0, NotChecked=0, Total=38612 [2024-12-02 13:31:34,958 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 4615 mSDsluCounter, 4730 mSDsCounter, 0 mSdLazyCounter, 5757 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4615 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 5757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:34,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4615 Valid, 4896 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 5757 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 13:31:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307137 states. [2024-12-02 13:31:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307137 to 137431. [2024-12-02 13:31:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137431 states, 137430 states have (on average 1.213344975623954) internal successors, (166750), 137430 states have internal predecessors, (166750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137431 states to 137431 states and 166750 transitions. [2024-12-02 13:31:37,056 INFO L78 Accepts]: Start accepts. Automaton has 137431 states and 166750 transitions. Word has length 114 [2024-12-02 13:31:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:37,056 INFO L471 AbstractCegarLoop]: Abstraction has 137431 states and 166750 transitions. [2024-12-02 13:31:37,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.785714285714286) internal successors, (327), 42 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 137431 states and 166750 transitions. [2024-12-02 13:31:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:31:37,060 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:37,060 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:37,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:31:37,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:31:37,260 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:37,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:37,261 INFO L85 PathProgramCache]: Analyzing trace with hash -507272811, now seen corresponding path program 1 times [2024-12-02 13:31:37,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939041101] [2024-12-02 13:31:37,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:37,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-12-02 13:31:37,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:37,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939041101] [2024-12-02 13:31:37,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939041101] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:37,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:37,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:31:37,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644886409] [2024-12-02 13:31:37,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:37,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:37,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:37,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:37,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:37,311 INFO L87 Difference]: Start difference. First operand 137431 states and 166750 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:37,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:37,652 INFO L93 Difference]: Finished difference Result 202507 states and 245614 transitions. [2024-12-02 13:31:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:37,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 114 [2024-12-02 13:31:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:37,817 INFO L225 Difference]: With dead ends: 202507 [2024-12-02 13:31:37,817 INFO L226 Difference]: Without dead ends: 175819 [2024-12-02 13:31:37,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:37,854 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 61 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:37,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 190 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:31:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175819 states. [2024-12-02 13:31:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175819 to 132618. [2024-12-02 13:31:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132618 states, 132617 states have (on average 1.2119637753832464) internal successors, (160727), 132617 states have internal predecessors, (160727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132618 states to 132618 states and 160727 transitions. [2024-12-02 13:31:39,588 INFO L78 Accepts]: Start accepts. Automaton has 132618 states and 160727 transitions. Word has length 114 [2024-12-02 13:31:39,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:39,589 INFO L471 AbstractCegarLoop]: Abstraction has 132618 states and 160727 transitions. [2024-12-02 13:31:39,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:39,589 INFO L276 IsEmpty]: Start isEmpty. Operand 132618 states and 160727 transitions. [2024-12-02 13:31:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:31:39,591 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:39,592 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:39,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 13:31:39,592 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:39,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1750734928, now seen corresponding path program 1 times [2024-12-02 13:31:39,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:39,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480712828] [2024-12-02 13:31:39,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:39,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 13:31:39,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:39,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480712828] [2024-12-02 13:31:39,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480712828] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:39,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:39,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:31:39,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078982664] [2024-12-02 13:31:39,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:39,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:31:39,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:39,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:31:39,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:31:39,678 INFO L87 Difference]: Start difference. First operand 132618 states and 160727 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:39,999 INFO L93 Difference]: Finished difference Result 154790 states and 187034 transitions. [2024-12-02 13:31:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:31:39,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-12-02 13:31:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:40,282 INFO L225 Difference]: With dead ends: 154790 [2024-12-02 13:31:40,283 INFO L226 Difference]: Without dead ends: 133024 [2024-12-02 13:31:40,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:31:40,299 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 61 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:40,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 274 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:31:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133024 states. [2024-12-02 13:31:41,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133024 to 132618. [2024-12-02 13:31:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132618 states, 132617 states have (on average 1.2100711070224783) internal successors, (160476), 132617 states have internal predecessors, (160476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132618 states to 132618 states and 160476 transitions. [2024-12-02 13:31:41,640 INFO L78 Accepts]: Start accepts. Automaton has 132618 states and 160476 transitions. Word has length 114 [2024-12-02 13:31:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:41,640 INFO L471 AbstractCegarLoop]: Abstraction has 132618 states and 160476 transitions. [2024-12-02 13:31:41,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 132618 states and 160476 transitions. [2024-12-02 13:31:41,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:31:41,643 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:41,643 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:41,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 13:31:41,644 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:41,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:41,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1075738517, now seen corresponding path program 2 times [2024-12-02 13:31:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:41,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653438379] [2024-12-02 13:31:41,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:31:41,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:41,677 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:31:41,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:31:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:31:42,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:42,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653438379] [2024-12-02 13:31:42,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653438379] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:31:42,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833254310] [2024-12-02 13:31:42,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:31:42,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:31:42,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:31:42,148 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:31:42,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:31:42,447 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:31:42,447 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:31:42,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 13:31:42,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:31:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:31:43,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:31:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:31:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833254310] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:31:43,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:31:43,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 34 [2024-12-02 13:31:43,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714168980] [2024-12-02 13:31:43,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:31:43,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 13:31:43,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:43,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 13:31:43,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 13:31:43,781 INFO L87 Difference]: Start difference. First operand 132618 states and 160476 transitions. Second operand has 34 states, 34 states have (on average 9.529411764705882) internal successors, (324), 34 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:54,584 INFO L93 Difference]: Finished difference Result 322617 states and 388695 transitions. [2024-12-02 13:31:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-12-02 13:31:54,584 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.529411764705882) internal successors, (324), 34 states have internal predecessors, (324), 0 states have call successors, (0), 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 114 [2024-12-02 13:31:54,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:54,806 INFO L225 Difference]: With dead ends: 322617 [2024-12-02 13:31:54,806 INFO L226 Difference]: Without dead ends: 235326 [2024-12-02 13:31:54,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9012 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=4560, Invalid=24170, Unknown=0, NotChecked=0, Total=28730 [2024-12-02 13:31:54,866 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 3463 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 4629 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 4702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 4629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:54,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 4360 Invalid, 4702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 4629 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 13:31:54,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235326 states. [2024-12-02 13:31:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235326 to 124980. [2024-12-02 13:31:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124980 states, 124979 states have (on average 1.199217468534714) internal successors, (149877), 124979 states have internal predecessors, (149877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124980 states to 124980 states and 149877 transitions. [2024-12-02 13:31:56,549 INFO L78 Accepts]: Start accepts. Automaton has 124980 states and 149877 transitions. Word has length 114 [2024-12-02 13:31:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:56,550 INFO L471 AbstractCegarLoop]: Abstraction has 124980 states and 149877 transitions. [2024-12-02 13:31:56,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.529411764705882) internal successors, (324), 34 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 124980 states and 149877 transitions. [2024-12-02 13:31:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:31:56,553 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:56,553 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:56,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 13:31:56,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 13:31:56,754 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:56,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:56,755 INFO L85 PathProgramCache]: Analyzing trace with hash -845769178, now seen corresponding path program 1 times [2024-12-02 13:31:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:56,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144570269] [2024-12-02 13:31:56,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:56,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-12-02 13:31:56,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:56,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144570269] [2024-12-02 13:31:56,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144570269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:56,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:56,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:31:56,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400355363] [2024-12-02 13:31:56,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:56,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:31:56,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:56,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:31:56,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:56,788 INFO L87 Difference]: Start difference. First operand 124980 states and 149877 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:57,137 INFO L93 Difference]: Finished difference Result 239844 states and 287478 transitions. [2024-12-02 13:31:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:31:57,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-12-02 13:31:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:57,236 INFO L225 Difference]: With dead ends: 239844 [2024-12-02 13:31:57,236 INFO L226 Difference]: Without dead ends: 115107 [2024-12-02 13:31:57,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:31:57,283 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 63 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:57,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 95 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:31:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115107 states. [2024-12-02 13:31:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115107 to 114873. [2024-12-02 13:31:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114873 states, 114872 states have (on average 1.1805749007591058) internal successors, (135615), 114872 states have internal predecessors, (135615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114873 states to 114873 states and 135615 transitions. [2024-12-02 13:31:58,491 INFO L78 Accepts]: Start accepts. Automaton has 114873 states and 135615 transitions. Word has length 114 [2024-12-02 13:31:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:58,491 INFO L471 AbstractCegarLoop]: Abstraction has 114873 states and 135615 transitions. [2024-12-02 13:31:58,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:31:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 114873 states and 135615 transitions. [2024-12-02 13:31:58,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:31:58,494 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:58,494 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:58,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 13:31:58,494 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:58,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:58,494 INFO L85 PathProgramCache]: Analyzing trace with hash 740739326, now seen corresponding path program 1 times [2024-12-02 13:31:58,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:58,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39367070] [2024-12-02 13:31:58,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:58,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:31:58,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:58,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39367070] [2024-12-02 13:31:58,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39367070] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:31:58,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509021726] [2024-12-02 13:31:58,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:58,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:31:58,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:31:58,931 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:31:58,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:31:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:59,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 13:31:59,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:31:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 52 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:31:59,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:32:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 49 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:32:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509021726] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:32:00,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:32:00,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 36 [2024-12-02 13:32:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67974302] [2024-12-02 13:32:00,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:32:00,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 13:32:00,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:32:00,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 13:32:00,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 13:32:00,559 INFO L87 Difference]: Start difference. First operand 114873 states and 135615 transitions. Second operand has 36 states, 36 states have (on average 8.833333333333334) internal successors, (318), 36 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:32:10,999 INFO L93 Difference]: Finished difference Result 285982 states and 335019 transitions. [2024-12-02 13:32:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-12-02 13:32:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.833333333333334) internal successors, (318), 36 states have internal predecessors, (318), 0 states have call successors, (0), 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 114 [2024-12-02 13:32:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:32:11,196 INFO L225 Difference]: With dead ends: 285982 [2024-12-02 13:32:11,196 INFO L226 Difference]: Without dead ends: 225776 [2024-12-02 13:32:11,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7848 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=4000, Invalid=21440, Unknown=0, NotChecked=0, Total=25440 [2024-12-02 13:32:11,239 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 2147 mSDsluCounter, 4590 mSDsCounter, 0 mSdLazyCounter, 5907 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 5941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:32:11,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2147 Valid, 4784 Invalid, 5941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 5907 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 13:32:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225776 states. [2024-12-02 13:32:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225776 to 157559. [2024-12-02 13:32:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157559 states, 157558 states have (on average 1.173218751190038) internal successors, (184850), 157558 states have internal predecessors, (184850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157559 states to 157559 states and 184850 transitions. [2024-12-02 13:32:12,871 INFO L78 Accepts]: Start accepts. Automaton has 157559 states and 184850 transitions. Word has length 114 [2024-12-02 13:32:12,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:32:12,871 INFO L471 AbstractCegarLoop]: Abstraction has 157559 states and 184850 transitions. [2024-12-02 13:32:12,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.833333333333334) internal successors, (318), 36 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 157559 states and 184850 transitions. [2024-12-02 13:32:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 13:32:12,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:32:12,874 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:32:12,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 13:32:13,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:32:13,075 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:32:13,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:32:13,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1126597976, now seen corresponding path program 1 times [2024-12-02 13:32:13,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:32:13,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745025382] [2024-12-02 13:32:13,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:32:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 13:32:13,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:32:13,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745025382] [2024-12-02 13:32:13,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745025382] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:32:13,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:32:13,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:32:13,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253860495] [2024-12-02 13:32:13,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:32:13,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:32:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:32:13,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:32:13,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:32:13,401 INFO L87 Difference]: Start difference. First operand 157559 states and 184850 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:13,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:32:13,735 INFO L93 Difference]: Finished difference Result 232009 states and 272710 transitions. [2024-12-02 13:32:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:32:13,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 115 [2024-12-02 13:32:13,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:32:13,901 INFO L225 Difference]: With dead ends: 232009 [2024-12-02 13:32:13,901 INFO L226 Difference]: Without dead ends: 193828 [2024-12-02 13:32:13,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:32:13,942 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 52 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:32:13,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 254 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:32:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193828 states. [2024-12-02 13:32:15,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193828 to 171620. [2024-12-02 13:32:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171620 states, 171619 states have (on average 1.1717816791847055) internal successors, (201100), 171619 states have internal predecessors, (201100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171620 states to 171620 states and 201100 transitions. [2024-12-02 13:32:15,602 INFO L78 Accepts]: Start accepts. Automaton has 171620 states and 201100 transitions. Word has length 115 [2024-12-02 13:32:15,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:32:15,602 INFO L471 AbstractCegarLoop]: Abstraction has 171620 states and 201100 transitions. [2024-12-02 13:32:15,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 171620 states and 201100 transitions. [2024-12-02 13:32:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 13:32:15,607 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:32:15,607 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:32:15,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 13:32:15,607 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:32:15,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:32:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash -510229196, now seen corresponding path program 2 times [2024-12-02 13:32:15,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:32:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022492878] [2024-12-02 13:32:15,608 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:32:15,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:32:15,654 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:32:15,654 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:32:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:32:16,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:32:16,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022492878] [2024-12-02 13:32:16,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022492878] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:32:16,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434509359] [2024-12-02 13:32:16,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:32:16,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:32:16,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:32:16,240 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:32:16,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 13:32:16,376 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:32:16,376 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:32:16,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 13:32:16,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:32:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:32:17,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:32:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:32:18,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434509359] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:32:18,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:32:18,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 14] total 40 [2024-12-02 13:32:18,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299917192] [2024-12-02 13:32:18,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:32:18,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 13:32:18,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:32:18,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 13:32:18,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 13:32:18,581 INFO L87 Difference]: Start difference. First operand 171620 states and 201100 transitions. Second operand has 40 states, 40 states have (on average 7.65) internal successors, (306), 40 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:32:20,894 INFO L93 Difference]: Finished difference Result 341994 states and 402212 transitions. [2024-12-02 13:32:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 13:32:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.65) internal successors, (306), 40 states have internal predecessors, (306), 0 states have call successors, (0), 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 115 [2024-12-02 13:32:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:32:21,087 INFO L225 Difference]: With dead ends: 341994 [2024-12-02 13:32:21,087 INFO L226 Difference]: Without dead ends: 207950 [2024-12-02 13:32:21,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1048, Invalid=5114, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 13:32:21,140 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 2118 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2118 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:32:21,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2118 Valid, 3729 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:32:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207950 states. [2024-12-02 13:32:22,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207950 to 182765. [2024-12-02 13:32:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182765 states, 182764 states have (on average 1.170011599658576) internal successors, (213836), 182764 states have internal predecessors, (213836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:22,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182765 states to 182765 states and 213836 transitions. [2024-12-02 13:32:22,840 INFO L78 Accepts]: Start accepts. Automaton has 182765 states and 213836 transitions. Word has length 115 [2024-12-02 13:32:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:32:22,840 INFO L471 AbstractCegarLoop]: Abstraction has 182765 states and 213836 transitions. [2024-12-02 13:32:22,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.65) internal successors, (306), 40 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 182765 states and 213836 transitions. [2024-12-02 13:32:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 13:32:22,844 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:32:22,844 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:32:22,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 13:32:23,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 13:32:23,044 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:32:23,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:32:23,045 INFO L85 PathProgramCache]: Analyzing trace with hash 380515000, now seen corresponding path program 1 times [2024-12-02 13:32:23,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:32:23,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306858485] [2024-12-02 13:32:23,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:23,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:32:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 51 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 13:32:23,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:32:23,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306858485] [2024-12-02 13:32:23,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306858485] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:32:23,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504337602] [2024-12-02 13:32:23,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:23,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:32:23,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:32:23,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:32:23,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 13:32:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:23,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 13:32:23,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:32:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 55 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:32:24,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:32:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 13:32:26,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504337602] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:32:26,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:32:26,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 15] total 41 [2024-12-02 13:32:26,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553866682] [2024-12-02 13:32:26,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:32:26,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 13:32:26,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:32:26,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 13:32:26,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1493, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 13:32:26,212 INFO L87 Difference]: Start difference. First operand 182765 states and 213836 transitions. Second operand has 41 states, 41 states have (on average 7.609756097560975) internal successors, (312), 41 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:32:29,750 INFO L93 Difference]: Finished difference Result 321114 states and 375929 transitions. [2024-12-02 13:32:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 13:32:29,751 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.609756097560975) internal successors, (312), 41 states have internal predecessors, (312), 0 states have call successors, (0), 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 115 [2024-12-02 13:32:29,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:32:30,029 INFO L225 Difference]: With dead ends: 321114 [2024-12-02 13:32:30,029 INFO L226 Difference]: Without dead ends: 258361 [2024-12-02 13:32:30,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1743 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1336, Invalid=6674, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 13:32:30,094 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 1343 mSDsluCounter, 4803 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 5074 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:32:30,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 5074 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:32:30,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258361 states. [2024-12-02 13:32:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258361 to 230986. [2024-12-02 13:32:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230986 states, 230985 states have (on average 1.1702837846613416) internal successors, (270318), 230985 states have internal predecessors, (270318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230986 states to 230986 states and 270318 transitions. [2024-12-02 13:32:32,671 INFO L78 Accepts]: Start accepts. Automaton has 230986 states and 270318 transitions. Word has length 115 [2024-12-02 13:32:32,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:32:32,671 INFO L471 AbstractCegarLoop]: Abstraction has 230986 states and 270318 transitions. [2024-12-02 13:32:32,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.609756097560975) internal successors, (312), 41 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 230986 states and 270318 transitions. [2024-12-02 13:32:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 13:32:32,674 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:32:32,674 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:32:32,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 13:32:32,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 13:32:32,875 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:32:32,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:32:32,875 INFO L85 PathProgramCache]: Analyzing trace with hash -523639299, now seen corresponding path program 1 times [2024-12-02 13:32:32,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:32:32,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974949815] [2024-12-02 13:32:32,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:32,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:32:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 13:32:33,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:32:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974949815] [2024-12-02 13:32:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974949815] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:32:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053556974] [2024-12-02 13:32:33,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:33,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:32:33,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:32:33,363 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:32:33,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 13:32:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:33,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 13:32:33,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:32:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 13:32:34,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:32:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 13:32:35,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053556974] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:32:35,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:32:35,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 20] total 42 [2024-12-02 13:32:35,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261994908] [2024-12-02 13:32:35,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:32:35,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 13:32:35,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:32:35,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 13:32:35,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1414, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 13:32:35,619 INFO L87 Difference]: Start difference. First operand 230986 states and 270318 transitions. Second operand has 42 states, 42 states have (on average 6.261904761904762) internal successors, (263), 42 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:32:37,116 INFO L93 Difference]: Finished difference Result 303658 states and 356516 transitions. [2024-12-02 13:32:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 13:32:37,117 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.261904761904762) internal successors, (263), 42 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) Word has length 116 [2024-12-02 13:32:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:32:37,357 INFO L225 Difference]: With dead ends: 303658 [2024-12-02 13:32:37,357 INFO L226 Difference]: Without dead ends: 228816 [2024-12-02 13:32:37,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=627, Invalid=2453, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 13:32:37,404 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 847 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:32:37,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2085 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:32:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228816 states. [2024-12-02 13:32:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228816 to 223049. [2024-12-02 13:32:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223049 states, 223048 states have (on average 1.1703579498583265) internal successors, (261046), 223048 states have internal predecessors, (261046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223049 states to 223049 states and 261046 transitions. [2024-12-02 13:32:39,466 INFO L78 Accepts]: Start accepts. Automaton has 223049 states and 261046 transitions. Word has length 116 [2024-12-02 13:32:39,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:32:39,466 INFO L471 AbstractCegarLoop]: Abstraction has 223049 states and 261046 transitions. [2024-12-02 13:32:39,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.261904761904762) internal successors, (263), 42 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 223049 states and 261046 transitions. [2024-12-02 13:32:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 13:32:39,469 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:32:39,469 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:32:39,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 13:32:39,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 13:32:39,670 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:32:39,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:32:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash 530762338, now seen corresponding path program 1 times [2024-12-02 13:32:39,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:32:39,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216741956] [2024-12-02 13:32:39,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:32:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 13:32:39,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:32:39,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216741956] [2024-12-02 13:32:39,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216741956] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:32:39,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:32:39,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:32:39,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415686100] [2024-12-02 13:32:39,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:32:39,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:32:39,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:32:39,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:32:39,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:32:39,734 INFO L87 Difference]: Start difference. First operand 223049 states and 261046 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:32:40,424 INFO L93 Difference]: Finished difference Result 284379 states and 332896 transitions. [2024-12-02 13:32:40,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:32:40,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-12-02 13:32:40,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:32:40,474 INFO L225 Difference]: With dead ends: 284379 [2024-12-02 13:32:40,474 INFO L226 Difference]: Without dead ends: 61853 [2024-12-02 13:32:40,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:32:40,514 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 28 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:32:40,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 169 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:32:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61853 states. [2024-12-02 13:32:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61853 to 59084. [2024-12-02 13:32:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59084 states, 59083 states have (on average 1.1528358411048862) internal successors, (68113), 59083 states have internal predecessors, (68113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59084 states to 59084 states and 68113 transitions. [2024-12-02 13:32:41,005 INFO L78 Accepts]: Start accepts. Automaton has 59084 states and 68113 transitions. Word has length 116 [2024-12-02 13:32:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:32:41,005 INFO L471 AbstractCegarLoop]: Abstraction has 59084 states and 68113 transitions. [2024-12-02 13:32:41,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 59084 states and 68113 transitions. [2024-12-02 13:32:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 13:32:41,007 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:32:41,007 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:32:41,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 13:32:41,007 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:32:41,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:32:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1478300517, now seen corresponding path program 2 times [2024-12-02 13:32:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:32:41,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347448162] [2024-12-02 13:32:41,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:32:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:32:41,045 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:32:41,045 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:32:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:32:42,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:32:42,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347448162] [2024-12-02 13:32:42,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347448162] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:32:42,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323002461] [2024-12-02 13:32:42,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:32:42,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:32:42,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:32:42,355 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:32:42,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 13:32:42,515 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:32:42,515 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:32:42,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 13:32:42,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:32:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 22 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 13:32:43,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:32:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 29 proven. 23 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 13:32:45,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323002461] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:32:45,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:32:45,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 18] total 51 [2024-12-02 13:32:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029381164] [2024-12-02 13:32:45,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:32:45,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 13:32:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:32:45,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 13:32:45,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2296, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 13:32:45,595 INFO L87 Difference]: Start difference. First operand 59084 states and 68113 transitions. Second operand has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:51,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:32:51,764 INFO L93 Difference]: Finished difference Result 124390 states and 143920 transitions. [2024-12-02 13:32:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-12-02 13:32:51,764 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 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 116 [2024-12-02 13:32:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:32:51,845 INFO L225 Difference]: With dead ends: 124390 [2024-12-02 13:32:51,845 INFO L226 Difference]: Without dead ends: 104826 [2024-12-02 13:32:51,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4405 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2813, Invalid=15009, Unknown=0, NotChecked=0, Total=17822 [2024-12-02 13:32:51,868 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 4960 mSDsluCounter, 6293 mSDsCounter, 0 mSdLazyCounter, 3556 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:32:51,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 6563 Invalid, 3631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3556 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 13:32:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104826 states. [2024-12-02 13:32:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104826 to 62149. [2024-12-02 13:32:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62149 states, 62148 states have (on average 1.154115981206153) internal successors, (71726), 62148 states have internal predecessors, (71726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62149 states to 62149 states and 71726 transitions. [2024-12-02 13:32:52,547 INFO L78 Accepts]: Start accepts. Automaton has 62149 states and 71726 transitions. Word has length 116 [2024-12-02 13:32:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:32:52,548 INFO L471 AbstractCegarLoop]: Abstraction has 62149 states and 71726 transitions. [2024-12-02 13:32:52,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 62149 states and 71726 transitions. [2024-12-02 13:32:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 13:32:52,550 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:32:52,550 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:32:52,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 13:32:52,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 13:32:52,750 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:32:52,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:32:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1819602511, now seen corresponding path program 1 times [2024-12-02 13:32:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:32:52,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026648239] [2024-12-02 13:32:52,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:52,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:32:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 13:32:52,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:32:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026648239] [2024-12-02 13:32:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026648239] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:32:52,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:32:52,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:32:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505786773] [2024-12-02 13:32:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:32:52,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:32:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:32:52,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:32:52,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:32:52,788 INFO L87 Difference]: Start difference. First operand 62149 states and 71726 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:52,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:32:52,872 INFO L93 Difference]: Finished difference Result 67297 states and 77707 transitions. [2024-12-02 13:32:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:32:52,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-12-02 13:32:52,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:32:52,899 INFO L225 Difference]: With dead ends: 67297 [2024-12-02 13:32:52,899 INFO L226 Difference]: Without dead ends: 40434 [2024-12-02 13:32:52,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:32:52,912 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 46 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:32:52,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 220 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:32:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40434 states. [2024-12-02 13:32:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40434 to 36859. [2024-12-02 13:32:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36859 states, 36858 states have (on average 1.1296055130500842) internal successors, (41635), 36858 states have internal predecessors, (41635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36859 states to 36859 states and 41635 transitions. [2024-12-02 13:32:53,189 INFO L78 Accepts]: Start accepts. Automaton has 36859 states and 41635 transitions. Word has length 119 [2024-12-02 13:32:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:32:53,189 INFO L471 AbstractCegarLoop]: Abstraction has 36859 states and 41635 transitions. [2024-12-02 13:32:53,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:32:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 36859 states and 41635 transitions. [2024-12-02 13:32:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 13:32:53,190 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:32:53,190 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:32:53,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 13:32:53,191 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:32:53,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:32:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash 901333125, now seen corresponding path program 1 times [2024-12-02 13:32:53,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:32:53,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782354352] [2024-12-02 13:32:53,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:53,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:32:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 64 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 13:32:53,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:32:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782354352] [2024-12-02 13:32:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782354352] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:32:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172419085] [2024-12-02 13:32:53,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:53,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:32:53,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:32:53,891 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:32:53,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 13:32:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:54,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-12-02 13:32:54,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:32:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 64 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 13:32:56,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:33:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:33:00,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172419085] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:33:00,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:33:00,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 26] total 65 [2024-12-02 13:33:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804096384] [2024-12-02 13:33:00,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:33:00,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-12-02 13:33:00,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:33:00,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-12-02 13:33:00,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=3754, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 13:33:00,197 INFO L87 Difference]: Start difference. First operand 36859 states and 41635 transitions. Second operand has 65 states, 65 states have (on average 4.323076923076923) internal successors, (281), 65 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:33:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:33:55,951 INFO L93 Difference]: Finished difference Result 68933 states and 78241 transitions. [2024-12-02 13:33:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2024-12-02 13:33:55,952 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.323076923076923) internal successors, (281), 65 states have internal predecessors, (281), 0 states have call successors, (0), 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 120 [2024-12-02 13:33:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:33:55,993 INFO L225 Difference]: With dead ends: 68933 [2024-12-02 13:33:55,993 INFO L226 Difference]: Without dead ends: 50620 [2024-12-02 13:33:56,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39770 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=11006, Invalid=87904, Unknown=0, NotChecked=0, Total=98910 [2024-12-02 13:33:56,012 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 4883 mSDsluCounter, 8864 mSDsCounter, 0 mSdLazyCounter, 6567 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4883 SdHoareTripleChecker+Valid, 9084 SdHoareTripleChecker+Invalid, 6690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 6567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:33:56,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4883 Valid, 9084 Invalid, 6690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 6567 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-12-02 13:33:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50620 states. [2024-12-02 13:33:56,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50620 to 40360. [2024-12-02 13:33:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40360 states, 40359 states have (on average 1.1310240590698482) internal successors, (45647), 40359 states have internal predecessors, (45647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:33:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40360 states to 40360 states and 45647 transitions. [2024-12-02 13:33:56,416 INFO L78 Accepts]: Start accepts. Automaton has 40360 states and 45647 transitions. Word has length 120 [2024-12-02 13:33:56,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:33:56,416 INFO L471 AbstractCegarLoop]: Abstraction has 40360 states and 45647 transitions. [2024-12-02 13:33:56,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.323076923076923) internal successors, (281), 65 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:33:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 40360 states and 45647 transitions. [2024-12-02 13:33:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 13:33:56,418 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:33:56,418 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:33:56,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 13:33:56,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:33:56,619 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:33:56,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:33:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash -261518820, now seen corresponding path program 1 times [2024-12-02 13:33:56,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:33:56,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346909847] [2024-12-02 13:33:56,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:33:56,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:33:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:33:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:33:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:33:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346909847] [2024-12-02 13:33:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346909847] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:33:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364726070] [2024-12-02 13:33:57,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:33:57,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:33:57,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:33:57,340 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:33:57,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 13:33:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:33:57,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 13:33:57,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:33:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:33:59,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:34:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:34:02,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364726070] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:34:02,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:34:02,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26, 26] total 71 [2024-12-02 13:34:02,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356746145] [2024-12-02 13:34:02,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:34:02,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-12-02 13:34:02,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:34:02,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-12-02 13:34:02,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4642, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 13:34:02,982 INFO L87 Difference]: Start difference. First operand 40360 states and 45647 transitions. Second operand has 71 states, 71 states have (on average 4.661971830985915) internal successors, (331), 71 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:06,286 INFO L93 Difference]: Finished difference Result 73984 states and 83645 transitions. [2024-12-02 13:38:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 590 states. [2024-12-02 13:38:06,286 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.661971830985915) internal successors, (331), 71 states have internal predecessors, (331), 0 states have call successors, (0), 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 [2024-12-02 13:38:06,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:06,321 INFO L225 Difference]: With dead ends: 73984 [2024-12-02 13:38:06,321 INFO L226 Difference]: Without dead ends: 57017 [2024-12-02 13:38:06,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 657 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187147 ImplicationChecksByTransitivity, 234.2s TimeCoverageRelationStatistics Valid=47500, Invalid=386122, Unknown=0, NotChecked=0, Total=433622 [2024-12-02 13:38:06,341 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 15402 mSDsluCounter, 9783 mSDsCounter, 0 mSdLazyCounter, 11890 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15402 SdHoareTripleChecker+Valid, 10047 SdHoareTripleChecker+Invalid, 12334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 11890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:06,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15402 Valid, 10047 Invalid, 12334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [444 Valid, 11890 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-12-02 13:38:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57017 states. [2024-12-02 13:38:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57017 to 41123. [2024-12-02 13:38:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41123 states, 41122 states have (on average 1.1309274840717864) internal successors, (46506), 41122 states have internal predecessors, (46506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:06,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41123 states to 41123 states and 46506 transitions. [2024-12-02 13:38:06,678 INFO L78 Accepts]: Start accepts. Automaton has 41123 states and 46506 transitions. Word has length 121 [2024-12-02 13:38:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:06,679 INFO L471 AbstractCegarLoop]: Abstraction has 41123 states and 46506 transitions. [2024-12-02 13:38:06,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.661971830985915) internal successors, (331), 71 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:06,679 INFO L276 IsEmpty]: Start isEmpty. Operand 41123 states and 46506 transitions. [2024-12-02 13:38:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 13:38:06,681 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:06,681 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-12-02 13:38:06,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 13:38:06,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-12-02 13:38:06,882 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:06,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash 147276164, now seen corresponding path program 2 times [2024-12-02 13:38:06,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:06,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524240743] [2024-12-02 13:38:06,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:38:06,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:06,916 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:38:06,916 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 130 proven. 33 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 13:38:07,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524240743] [2024-12-02 13:38:07,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524240743] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179665148] [2024-12-02 13:38:07,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:38:07,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:07,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:07,218 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:07,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 13:38:07,400 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 13:38:07,400 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:38:07,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 13:38:07,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 150 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 13:38:08,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 13:38:09,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179665148] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:09,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:09,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 21] total 42 [2024-12-02 13:38:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887746431] [2024-12-02 13:38:09,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:09,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 13:38:09,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:09,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 13:38:09,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1371, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 13:38:09,502 INFO L87 Difference]: Start difference. First operand 41123 states and 46506 transitions. Second operand has 42 states, 42 states have (on average 6.238095238095238) internal successors, (262), 42 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:10,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:10,802 INFO L93 Difference]: Finished difference Result 49547 states and 56000 transitions. [2024-12-02 13:38:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 13:38:10,802 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.238095238095238) internal successors, (262), 42 states have internal predecessors, (262), 0 states have call successors, (0), 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 142 [2024-12-02 13:38:10,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:10,832 INFO L225 Difference]: With dead ends: 49547 [2024-12-02 13:38:10,832 INFO L226 Difference]: Without dead ends: 46141 [2024-12-02 13:38:10,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=891, Invalid=3015, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 13:38:10,841 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 1280 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:10,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 2962 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 13:38:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46141 states. [2024-12-02 13:38:11,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46141 to 43715. [2024-12-02 13:38:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43715 states, 43714 states have (on average 1.1281511643866953) internal successors, (49316), 43714 states have internal predecessors, (49316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43715 states to 43715 states and 49316 transitions. [2024-12-02 13:38:11,164 INFO L78 Accepts]: Start accepts. Automaton has 43715 states and 49316 transitions. Word has length 142 [2024-12-02 13:38:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:11,164 INFO L471 AbstractCegarLoop]: Abstraction has 43715 states and 49316 transitions. [2024-12-02 13:38:11,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.238095238095238) internal successors, (262), 42 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 43715 states and 49316 transitions. [2024-12-02 13:38:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 13:38:11,167 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:11,167 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-12-02 13:38:11,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 13:38:11,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-12-02 13:38:11,367 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:11,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2108188226, now seen corresponding path program 1 times [2024-12-02 13:38:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:11,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086032915] [2024-12-02 13:38:11,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 13:38:11,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:11,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086032915] [2024-12-02 13:38:11,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086032915] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:11,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607275173] [2024-12-02 13:38:11,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:11,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:11,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:11,725 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:11,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 13:38:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:11,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 13:38:11,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 13:38:12,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 13:38:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607275173] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:13,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:13,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 35 [2024-12-02 13:38:13,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848318361] [2024-12-02 13:38:13,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:13,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 13:38:13,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:13,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 13:38:13,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:38:13,505 INFO L87 Difference]: Start difference. First operand 43715 states and 49316 transitions. Second operand has 35 states, 35 states have (on average 5.628571428571429) internal successors, (197), 35 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:15,682 INFO L93 Difference]: Finished difference Result 64568 states and 73258 transitions. [2024-12-02 13:38:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 13:38:15,683 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.628571428571429) internal successors, (197), 35 states have internal predecessors, (197), 0 states have call successors, (0), 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 142 [2024-12-02 13:38:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:15,724 INFO L225 Difference]: With dead ends: 64568 [2024-12-02 13:38:15,724 INFO L226 Difference]: Without dead ends: 57157 [2024-12-02 13:38:15,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1242, Invalid=3870, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 13:38:15,737 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 3656 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3656 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:15,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3656 Valid, 2743 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 13:38:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57157 states. [2024-12-02 13:38:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57157 to 44461. [2024-12-02 13:38:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44461 states, 44460 states have (on average 1.1284525416104363) internal successors, (50171), 44460 states have internal predecessors, (50171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44461 states to 44461 states and 50171 transitions. [2024-12-02 13:38:16,099 INFO L78 Accepts]: Start accepts. Automaton has 44461 states and 50171 transitions. Word has length 142 [2024-12-02 13:38:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:16,099 INFO L471 AbstractCegarLoop]: Abstraction has 44461 states and 50171 transitions. [2024-12-02 13:38:16,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.628571428571429) internal successors, (197), 35 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 44461 states and 50171 transitions. [2024-12-02 13:38:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 13:38:16,101 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:16,101 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-12-02 13:38:16,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 13:38:16,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-12-02 13:38:16,302 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:16,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:16,302 INFO L85 PathProgramCache]: Analyzing trace with hash 664974986, now seen corresponding path program 1 times [2024-12-02 13:38:16,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:16,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581666529] [2024-12-02 13:38:16,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 128 proven. 26 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-02 13:38:16,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:16,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581666529] [2024-12-02 13:38:16,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581666529] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:16,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315436024] [2024-12-02 13:38:16,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:16,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:16,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:16,642 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:16,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 13:38:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:16,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 13:38:16,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 135 proven. 19 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-02 13:38:17,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 128 proven. 26 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-02 13:38:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315436024] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:17,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:17,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2024-12-02 13:38:17,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099237314] [2024-12-02 13:38:17,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:17,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 13:38:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:17,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 13:38:17,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2024-12-02 13:38:17,951 INFO L87 Difference]: Start difference. First operand 44461 states and 50171 transitions. Second operand has 29 states, 29 states have (on average 6.931034482758621) internal successors, (201), 29 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) [2024-12-02 13:38:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:19,113 INFO L93 Difference]: Finished difference Result 67406 states and 76628 transitions. [2024-12-02 13:38:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 13:38:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.931034482758621) internal successors, (201), 29 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) Word has length 142 [2024-12-02 13:38:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:19,159 INFO L225 Difference]: With dead ends: 67406 [2024-12-02 13:38:19,159 INFO L226 Difference]: Without dead ends: 61649 [2024-12-02 13:38:19,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=548, Invalid=1902, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 13:38:19,171 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 1269 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 3360 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:19,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 3360 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 13:38:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61649 states. [2024-12-02 13:38:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61649 to 46988. [2024-12-02 13:38:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46988 states, 46987 states have (on average 1.1297380126417946) internal successors, (53083), 46987 states have internal predecessors, (53083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46988 states to 46988 states and 53083 transitions. [2024-12-02 13:38:19,566 INFO L78 Accepts]: Start accepts. Automaton has 46988 states and 53083 transitions. Word has length 142 [2024-12-02 13:38:19,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:19,566 INFO L471 AbstractCegarLoop]: Abstraction has 46988 states and 53083 transitions. [2024-12-02 13:38:19,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.931034482758621) internal successors, (201), 29 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) [2024-12-02 13:38:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 46988 states and 53083 transitions. [2024-12-02 13:38:19,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 13:38:19,568 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:19,568 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:19,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 13:38:19,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:19,769 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:19,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:19,769 INFO L85 PathProgramCache]: Analyzing trace with hash 296261786, now seen corresponding path program 1 times [2024-12-02 13:38:19,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:19,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322364660] [2024-12-02 13:38:19,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:19,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 136 proven. 51 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 13:38:20,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:20,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322364660] [2024-12-02 13:38:20,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322364660] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:20,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026266922] [2024-12-02 13:38:20,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:20,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:20,148 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:20,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 13:38:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:20,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 13:38:20,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 153 proven. 34 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 13:38:21,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 153 proven. 34 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 13:38:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026266922] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:21,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:21,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2024-12-02 13:38:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031530124] [2024-12-02 13:38:21,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:21,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 13:38:21,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:21,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 13:38:21,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2024-12-02 13:38:21,813 INFO L87 Difference]: Start difference. First operand 46988 states and 53083 transitions. Second operand has 29 states, 29 states have (on average 10.068965517241379) internal successors, (292), 29 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:25,043 INFO L93 Difference]: Finished difference Result 54175 states and 61146 transitions. [2024-12-02 13:38:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-12-02 13:38:25,044 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.068965517241379) internal successors, (292), 29 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-12-02 13:38:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:25,079 INFO L225 Difference]: With dead ends: 54175 [2024-12-02 13:38:25,079 INFO L226 Difference]: Without dead ends: 47868 [2024-12-02 13:38:25,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1149, Invalid=5823, Unknown=0, NotChecked=0, Total=6972 [2024-12-02 13:38:25,090 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 1355 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:25,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 1929 Invalid, 2210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:38:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47868 states. [2024-12-02 13:38:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47868 to 46589. [2024-12-02 13:38:25,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46589 states, 46588 states have (on average 1.1285738816862712) internal successors, (52578), 46588 states have internal predecessors, (52578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46589 states to 46589 states and 52578 transitions. [2024-12-02 13:38:25,424 INFO L78 Accepts]: Start accepts. Automaton has 46589 states and 52578 transitions. Word has length 148 [2024-12-02 13:38:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:25,424 INFO L471 AbstractCegarLoop]: Abstraction has 46589 states and 52578 transitions. [2024-12-02 13:38:25,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.068965517241379) internal successors, (292), 29 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 46589 states and 52578 transitions. [2024-12-02 13:38:25,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 13:38:25,426 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:25,426 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:25,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 13:38:25,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:25,627 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:25,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2048724860, now seen corresponding path program 1 times [2024-12-02 13:38:25,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:25,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131280751] [2024-12-02 13:38:25,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:25,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 41 proven. 149 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 13:38:26,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131280751] [2024-12-02 13:38:26,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131280751] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965556019] [2024-12-02 13:38:26,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:26,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:26,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:26,045 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:26,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 13:38:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:26,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 13:38:26,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 144 proven. 50 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 13:38:27,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 160 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 13:38:28,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965556019] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:28,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:28,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2024-12-02 13:38:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549506330] [2024-12-02 13:38:28,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:28,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 13:38:28,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:28,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 13:38:28,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 13:38:28,150 INFO L87 Difference]: Start difference. First operand 46589 states and 52578 transitions. Second operand has 33 states, 33 states have (on average 9.454545454545455) internal successors, (312), 33 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:31,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:31,235 INFO L93 Difference]: Finished difference Result 57921 states and 65485 transitions. [2024-12-02 13:38:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 13:38:31,236 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.454545454545455) internal successors, (312), 33 states have internal predecessors, (312), 0 states have call successors, (0), 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 148 [2024-12-02 13:38:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:31,267 INFO L225 Difference]: With dead ends: 57921 [2024-12-02 13:38:31,267 INFO L226 Difference]: Without dead ends: 48296 [2024-12-02 13:38:31,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1200, Invalid=4962, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 13:38:31,276 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 1929 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:31,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1929 Valid, 1070 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 13:38:31,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48296 states. [2024-12-02 13:38:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48296 to 46277. [2024-12-02 13:38:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46277 states, 46276 states have (on average 1.1258967931541188) internal successors, (52102), 46276 states have internal predecessors, (52102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46277 states to 46277 states and 52102 transitions. [2024-12-02 13:38:31,604 INFO L78 Accepts]: Start accepts. Automaton has 46277 states and 52102 transitions. Word has length 148 [2024-12-02 13:38:31,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:31,604 INFO L471 AbstractCegarLoop]: Abstraction has 46277 states and 52102 transitions. [2024-12-02 13:38:31,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.454545454545455) internal successors, (312), 33 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:31,605 INFO L276 IsEmpty]: Start isEmpty. Operand 46277 states and 52102 transitions. [2024-12-02 13:38:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 13:38:31,607 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:31,607 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:31,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 13:38:31,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 13:38:31,808 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:31,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:31,808 INFO L85 PathProgramCache]: Analyzing trace with hash -131361092, now seen corresponding path program 1 times [2024-12-02 13:38:31,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:31,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871053263] [2024-12-02 13:38:31,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:31,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 132 proven. 68 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 13:38:32,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871053263] [2024-12-02 13:38:32,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871053263] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566639388] [2024-12-02 13:38:32,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:32,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:32,182 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:32,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 13:38:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:32,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 13:38:32,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 141 proven. 59 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 13:38:33,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 132 proven. 68 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 13:38:33,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566639388] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:33,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:33,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2024-12-02 13:38:33,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845863216] [2024-12-02 13:38:33,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:33,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 13:38:33,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:33,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 13:38:33,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:38:33,899 INFO L87 Difference]: Start difference. First operand 46277 states and 52102 transitions. Second operand has 35 states, 35 states have (on average 8.228571428571428) internal successors, (288), 34 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:35,349 INFO L93 Difference]: Finished difference Result 61665 states and 69835 transitions. [2024-12-02 13:38:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 13:38:35,350 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.228571428571428) internal successors, (288), 34 states have internal predecessors, (288), 0 states have call successors, (0), 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 148 [2024-12-02 13:38:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:35,388 INFO L225 Difference]: With dead ends: 61665 [2024-12-02 13:38:35,388 INFO L226 Difference]: Without dead ends: 55223 [2024-12-02 13:38:35,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=801, Invalid=4029, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 13:38:35,400 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 1415 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:35,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 2000 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 13:38:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55223 states. [2024-12-02 13:38:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55223 to 47057. [2024-12-02 13:38:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47057 states, 47056 states have (on average 1.1245112206732404) internal successors, (52915), 47056 states have internal predecessors, (52915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47057 states to 47057 states and 52915 transitions. [2024-12-02 13:38:35,764 INFO L78 Accepts]: Start accepts. Automaton has 47057 states and 52915 transitions. Word has length 148 [2024-12-02 13:38:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:35,764 INFO L471 AbstractCegarLoop]: Abstraction has 47057 states and 52915 transitions. [2024-12-02 13:38:35,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.228571428571428) internal successors, (288), 34 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 47057 states and 52915 transitions. [2024-12-02 13:38:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 13:38:35,767 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:35,767 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:35,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 13:38:35,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 13:38:35,967 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:35,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash 89861924, now seen corresponding path program 1 times [2024-12-02 13:38:35,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:35,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893698261] [2024-12-02 13:38:35,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:35,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 118 proven. 96 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 13:38:36,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893698261] [2024-12-02 13:38:36,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893698261] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383793342] [2024-12-02 13:38:36,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:36,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:36,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:36,617 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:36,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 13:38:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:36,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 13:38:36,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 13:38:38,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 118 proven. 96 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 13:38:40,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383793342] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:40,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:40,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 48 [2024-12-02 13:38:40,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727240837] [2024-12-02 13:38:40,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:40,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 13:38:40,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:40,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 13:38:40,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1953, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 13:38:40,017 INFO L87 Difference]: Start difference. First operand 47057 states and 52915 transitions. Second operand has 48 states, 48 states have (on average 6.854166666666667) internal successors, (329), 48 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:45,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:45,840 INFO L93 Difference]: Finished difference Result 50903 states and 57175 transitions. [2024-12-02 13:38:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-12-02 13:38:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.854166666666667) internal successors, (329), 48 states have internal predecessors, (329), 0 states have call successors, (0), 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 150 [2024-12-02 13:38:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:45,871 INFO L225 Difference]: With dead ends: 50903 [2024-12-02 13:38:45,871 INFO L226 Difference]: Without dead ends: 47651 [2024-12-02 13:38:45,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4134 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2987, Invalid=12265, Unknown=0, NotChecked=0, Total=15252 [2024-12-02 13:38:45,882 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 3043 mSDsluCounter, 5042 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 3162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:45,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 5300 Invalid, 3162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 13:38:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47651 states. [2024-12-02 13:38:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47651 to 45893. [2024-12-02 13:38:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45893 states, 45892 states have (on average 1.12529416891833) internal successors, (51642), 45892 states have internal predecessors, (51642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45893 states to 45893 states and 51642 transitions. [2024-12-02 13:38:46,214 INFO L78 Accepts]: Start accepts. Automaton has 45893 states and 51642 transitions. Word has length 150 [2024-12-02 13:38:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:46,215 INFO L471 AbstractCegarLoop]: Abstraction has 45893 states and 51642 transitions. [2024-12-02 13:38:46,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.854166666666667) internal successors, (329), 48 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 45893 states and 51642 transitions. [2024-12-02 13:38:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 13:38:46,217 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:46,217 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:46,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 13:38:46,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 13:38:46,417 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:46,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash 434149854, now seen corresponding path program 1 times [2024-12-02 13:38:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:46,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865534540] [2024-12-02 13:38:46,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 103 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 13:38:46,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:46,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865534540] [2024-12-02 13:38:46,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865534540] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:46,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192567842] [2024-12-02 13:38:46,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:46,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:46,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:46,967 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:46,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 13:38:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:47,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 13:38:47,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 124 proven. 92 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 13:38:48,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:38:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 103 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 13:38:50,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192567842] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:38:50,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:38:50,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26, 21] total 55 [2024-12-02 13:38:50,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882078904] [2024-12-02 13:38:50,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:38:50,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 13:38:50,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:38:50,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 13:38:50,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2664, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 13:38:50,175 INFO L87 Difference]: Start difference. First operand 45893 states and 51642 transitions. Second operand has 55 states, 55 states have (on average 5.927272727272728) internal successors, (326), 55 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:38:55,564 INFO L93 Difference]: Finished difference Result 62475 states and 70659 transitions. [2024-12-02 13:38:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-12-02 13:38:55,564 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.927272727272728) internal successors, (326), 55 states have internal predecessors, (326), 0 states have call successors, (0), 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 150 [2024-12-02 13:38:55,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:38:55,601 INFO L225 Difference]: With dead ends: 62475 [2024-12-02 13:38:55,601 INFO L226 Difference]: Without dead ends: 57464 [2024-12-02 13:38:55,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5164 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3273, Invalid=15633, Unknown=0, NotChecked=0, Total=18906 [2024-12-02 13:38:55,612 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 4418 mSDsluCounter, 5451 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5704 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:38:55,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4418 Valid, 5704 Invalid, 3353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 13:38:55,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57464 states. [2024-12-02 13:38:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57464 to 45913. [2024-12-02 13:38:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45913 states, 45912 states have (on average 1.125043561596097) internal successors, (51653), 45912 states have internal predecessors, (51653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45913 states to 45913 states and 51653 transitions. [2024-12-02 13:38:55,990 INFO L78 Accepts]: Start accepts. Automaton has 45913 states and 51653 transitions. Word has length 150 [2024-12-02 13:38:55,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:38:55,990 INFO L471 AbstractCegarLoop]: Abstraction has 45913 states and 51653 transitions. [2024-12-02 13:38:55,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.927272727272728) internal successors, (326), 55 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:38:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 45913 states and 51653 transitions. [2024-12-02 13:38:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 13:38:55,993 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:38:55,993 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:38:56,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 13:38:56,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:56,193 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:38:56,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:38:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash 122748660, now seen corresponding path program 1 times [2024-12-02 13:38:56,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:38:56,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031553375] [2024-12-02 13:38:56,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:56,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:38:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 87 proven. 131 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 13:38:56,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:38:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031553375] [2024-12-02 13:38:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031553375] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:38:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591056706] [2024-12-02 13:38:56,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:38:56,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:38:56,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:38:56,801 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:38:56,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 13:38:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:38:57,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 13:38:57,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:38:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 89 proven. 129 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 13:38:59,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:39:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 87 proven. 131 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 13:39:01,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591056706] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:39:01,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:39:01,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 29, 22] total 60 [2024-12-02 13:39:01,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677895867] [2024-12-02 13:39:01,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:39:01,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 13:39:01,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:01,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 13:39:01,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=3100, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 13:39:01,609 INFO L87 Difference]: Start difference. First operand 45913 states and 51653 transitions. Second operand has 60 states, 60 states have (on average 5.7) internal successors, (342), 60 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:39:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:39:44,276 INFO L93 Difference]: Finished difference Result 91090 states and 102598 transitions. [2024-12-02 13:39:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 311 states. [2024-12-02 13:39:44,276 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 5.7) internal successors, (342), 60 states have internal predecessors, (342), 0 states have call successors, (0), 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 150 [2024-12-02 13:39:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:39:44,331 INFO L225 Difference]: With dead ends: 91090 [2024-12-02 13:39:44,331 INFO L226 Difference]: Without dead ends: 86110 [2024-12-02 13:39:44,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59332 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=17927, Invalid=116395, Unknown=0, NotChecked=0, Total=134322 [2024-12-02 13:39:44,348 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 7180 mSDsluCounter, 8686 mSDsCounter, 0 mSdLazyCounter, 9869 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7180 SdHoareTripleChecker+Valid, 8912 SdHoareTripleChecker+Invalid, 10012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 9869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:39:44,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7180 Valid, 8912 Invalid, 10012 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 9869 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-12-02 13:39:44,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86110 states. [2024-12-02 13:39:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86110 to 45243. [2024-12-02 13:39:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45243 states, 45242 states have (on average 1.1257901949515936) internal successors, (50933), 45242 states have internal predecessors, (50933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:39:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45243 states to 45243 states and 50933 transitions. [2024-12-02 13:39:44,808 INFO L78 Accepts]: Start accepts. Automaton has 45243 states and 50933 transitions. Word has length 150 [2024-12-02 13:39:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:39:44,808 INFO L471 AbstractCegarLoop]: Abstraction has 45243 states and 50933 transitions. [2024-12-02 13:39:44,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 5.7) internal successors, (342), 60 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:39:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 45243 states and 50933 transitions. [2024-12-02 13:39:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 13:39:44,810 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:39:44,810 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:39:44,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 13:39:45,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:39:45,011 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:39:45,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:39:45,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1515225889, now seen corresponding path program 1 times [2024-12-02 13:39:45,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:39:45,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387845062] [2024-12-02 13:39:45,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:39:45,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:39:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:39:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 27 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:39:45,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:39:45,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387845062] [2024-12-02 13:39:45,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387845062] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:39:45,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928263925] [2024-12-02 13:39:45,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:39:45,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:39:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:39:45,692 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:39:45,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 13:39:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:39:45,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 13:39:45,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:39:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 100 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:39:47,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:39:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 145 proven. 61 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 13:39:47,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928263925] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:39:47,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:39:47,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 11] total 45 [2024-12-02 13:39:47,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079886656] [2024-12-02 13:39:47,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:39:47,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 13:39:47,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:39:47,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 13:39:47,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 13:39:47,935 INFO L87 Difference]: Start difference. First operand 45243 states and 50933 transitions. Second operand has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:40:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:40:03,810 INFO L93 Difference]: Finished difference Result 76095 states and 86287 transitions. [2024-12-02 13:40:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2024-12-02 13:40:03,811 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 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 153 [2024-12-02 13:40:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:40:03,851 INFO L225 Difference]: With dead ends: 76095 [2024-12-02 13:40:03,851 INFO L226 Difference]: Without dead ends: 69683 [2024-12-02 13:40:03,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37758 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=8744, Invalid=84586, Unknown=0, NotChecked=0, Total=93330 [2024-12-02 13:40:03,861 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 2358 mSDsluCounter, 4648 mSDsCounter, 0 mSdLazyCounter, 5539 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2358 SdHoareTripleChecker+Valid, 4867 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 5539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:40:03,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2358 Valid, 4867 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 5539 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 13:40:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69683 states. [2024-12-02 13:40:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69683 to 51470. [2024-12-02 13:40:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51470 states, 51469 states have (on average 1.1239192523655015) internal successors, (57847), 51469 states have internal predecessors, (57847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:40:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51470 states to 51470 states and 57847 transitions. [2024-12-02 13:40:04,295 INFO L78 Accepts]: Start accepts. Automaton has 51470 states and 57847 transitions. Word has length 153 [2024-12-02 13:40:04,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:40:04,295 INFO L471 AbstractCegarLoop]: Abstraction has 51470 states and 57847 transitions. [2024-12-02 13:40:04,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:40:04,295 INFO L276 IsEmpty]: Start isEmpty. Operand 51470 states and 57847 transitions. [2024-12-02 13:40:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 13:40:04,297 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:40:04,297 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:04,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 13:40:04,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:04,498 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:40:04,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 69098503, now seen corresponding path program 1 times [2024-12-02 13:40:04,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:04,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170719953] [2024-12-02 13:40:04,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:04,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 43 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:40:05,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:05,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170719953] [2024-12-02 13:40:05,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170719953] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:05,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971648444] [2024-12-02 13:40:05,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:05,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:05,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:05,179 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:05,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 13:40:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:05,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 13:40:05,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:40:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 71 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:40:06,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:40:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 43 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:40:07,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971648444] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:40:07,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:40:07,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 18] total 49 [2024-12-02 13:40:07,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350010913] [2024-12-02 13:40:07,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:40:07,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 13:40:07,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:07,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 13:40:07,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2082, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 13:40:07,374 INFO L87 Difference]: Start difference. First operand 51470 states and 57847 transitions. Second operand has 49 states, 49 states have (on average 8.142857142857142) internal successors, (399), 49 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:40:10,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:40:10,486 INFO L93 Difference]: Finished difference Result 54456 states and 61173 transitions. [2024-12-02 13:40:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-12-02 13:40:10,486 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.142857142857142) internal successors, (399), 49 states have internal predecessors, (399), 0 states have call successors, (0), 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 155 [2024-12-02 13:40:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:40:10,517 INFO L225 Difference]: With dead ends: 54456 [2024-12-02 13:40:10,517 INFO L226 Difference]: Without dead ends: 53261 [2024-12-02 13:40:10,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1414, Invalid=10358, Unknown=0, NotChecked=0, Total=11772 [2024-12-02 13:40:10,523 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 842 mSDsluCounter, 5503 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 5713 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:40:10,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 5713 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 13:40:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53261 states. [2024-12-02 13:40:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53261 to 51299. [2024-12-02 13:40:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51299 states, 51298 states have (on average 1.124273850832391) internal successors, (57673), 51298 states have internal predecessors, (57673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:40:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51299 states to 51299 states and 57673 transitions. [2024-12-02 13:40:10,891 INFO L78 Accepts]: Start accepts. Automaton has 51299 states and 57673 transitions. Word has length 155 [2024-12-02 13:40:10,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:40:10,891 INFO L471 AbstractCegarLoop]: Abstraction has 51299 states and 57673 transitions. [2024-12-02 13:40:10,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.142857142857142) internal successors, (399), 49 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:40:10,892 INFO L276 IsEmpty]: Start isEmpty. Operand 51299 states and 57673 transitions. [2024-12-02 13:40:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 13:40:10,894 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:40:10,894 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:40:10,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 13:40:11,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:11,095 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:40:11,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:40:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash 175592341, now seen corresponding path program 1 times [2024-12-02 13:40:11,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:40:11,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260707511] [2024-12-02 13:40:11,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:11,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:40:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 27 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:40:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:40:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260707511] [2024-12-02 13:40:11,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260707511] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:40:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675225552] [2024-12-02 13:40:11,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:40:11,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:40:11,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:40:11,736 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:40:11,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65005a4-fcf7-488d-9208-fc6ee6df415b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 13:40:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:40:11,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 13:40:11,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:40:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 37 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:40:13,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:40:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 27 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:40:16,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675225552] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:40:16,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:40:16,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28, 24] total 64 [2024-12-02 13:40:16,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387506316] [2024-12-02 13:40:16,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:40:16,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 13:40:16,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:40:16,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 13:40:16,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3642, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 13:40:16,257 INFO L87 Difference]: Start difference. First operand 51299 states and 57673 transitions. Second operand has 64 states, 64 states have (on average 6.390625) internal successors, (409), 64 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)