./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.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_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/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_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/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_899699de-1d70-4875-92fe-7ef92f2f5be5/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 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:34:33,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:34:33,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:34:33,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:34:33,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:34:33,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:34:33,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:34:33,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:34:33,932 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:34:33,932 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:34:33,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:34:33,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:34:33,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:34:33,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:34:33,933 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:34:33,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:34:33,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:34:33,933 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:34:33,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:34:33,934 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:34:33,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:34:33,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:34:33,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:34:33,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:34:33,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:34:33,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:34:33,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:34:33,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:34:33,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:34:33,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:34:33,935 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:34:33,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:34:33,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:34:33,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:34:33,936 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:34:33,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:34:33,936 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:34:33,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:34:33,936 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_899699de-1d70-4875-92fe-7ef92f2f5be5/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 -> 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b [2024-12-02 14:34:34,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:34:34,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:34:34,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:34:34,180 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:34:34,180 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:34:34,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2024-12-02 14:34:36,820 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/data/9539edf19/bffbd290ac764d8b877f7b3f06f18819/FLAGd5f101204 [2024-12-02 14:34:37,124 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:34:37,125 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2024-12-02 14:34:37,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/data/9539edf19/bffbd290ac764d8b877f7b3f06f18819/FLAGd5f101204 [2024-12-02 14:34:37,394 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/data/9539edf19/bffbd290ac764d8b877f7b3f06f18819 [2024-12-02 14:34:37,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:34:37,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:34:37,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:34:37,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:34:37,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:34:37,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:37,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f649a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37, skipping insertion in model container [2024-12-02 14:34:37,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:37,442 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:34:37,562 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_899699de-1d70-4875-92fe-7ef92f2f5be5/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2024-12-02 14:34:37,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:34:37,832 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:34:37,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-12-02 14:34:37,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2024-12-02 14:34:37,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [423] [2024-12-02 14:34:37,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [523] [2024-12-02 14:34:37,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [643] [2024-12-02 14:34:37,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [832] [2024-12-02 14:34:37,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1185] [2024-12-02 14:34:37,842 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1200] [2024-12-02 14:34:37,842 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2726] [2024-12-02 14:34:37,842 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3387] [2024-12-02 14:34:37,845 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_899699de-1d70-4875-92fe-7ef92f2f5be5/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2024-12-02 14:34:37,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:34:37,953 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:34:37,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37 WrapperNode [2024-12-02 14:34:37,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:34:37,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:34:37,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:34:37,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:34:37,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:37,975 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,006 INFO L138 Inliner]: procedures = 91, calls = 344, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1099 [2024-12-02 14:34:38,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:34:38,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:34:38,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:34:38,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:34:38,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,043 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 14:34:38,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:34:38,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:34:38,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:34:38,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:34:38,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (1/1) ... [2024-12-02 14:34:38,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:34:38,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:34:38,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:34:38,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:34:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:34:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 14:34:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 14:34:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 14:34:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 14:34:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-02 14:34:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-02 14:34:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 14:34:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 14:34:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 14:34:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 14:34:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 14:34:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 14:34:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 14:34:38,149 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 14:34:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 14:34:38,149 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 14:34:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 14:34:38,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 14:34:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 14:34:38,149 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 14:34:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 14:34:38,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 14:34:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 14:34:38,149 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 14:34:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 14:34:38,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 14:34:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 14:34:38,149 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 14:34:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 14:34:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 14:34:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-12-02 14:34:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-12-02 14:34:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 14:34:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 14:34:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 14:34:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 14:34:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 14:34:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 14:34:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 14:34:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 14:34:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 14:34:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 14:34:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:34:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 14:34:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 14:34:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 14:34:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 14:34:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 14:34:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 14:34:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 14:34:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 14:34:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 14:34:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 14:34:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:34:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:34:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 14:34:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 14:34:38,323 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:34:38,324 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:34:39,379 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-12-02 14:34:39,380 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:34:39,400 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:34:39,401 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:34:39,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:34:39 BoogieIcfgContainer [2024-12-02 14:34:39,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:34:39,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:34:39,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:34:39,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:34:39,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:34:37" (1/3) ... [2024-12-02 14:34:39,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aab90a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:34:39, skipping insertion in model container [2024-12-02 14:34:39,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:37" (2/3) ... [2024-12-02 14:34:39,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aab90a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:34:39, skipping insertion in model container [2024-12-02 14:34:39,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:34:39" (3/3) ... [2024-12-02 14:34:39,410 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2024-12-02 14:34:39,424 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:34:39,427 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product11.cil.c that has 27 procedures, 582 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:34:39,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:34:39,502 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;@33684eaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:34:39,502 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:34:39,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 582 states, 448 states have (on average 1.6763392857142858) internal successors, (751), 466 states have internal predecessors, (751), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2024-12-02 14:34:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 14:34:39,524 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:39,524 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:39,525 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:39,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash 7302120, now seen corresponding path program 1 times [2024-12-02 14:34:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176383604] [2024-12-02 14:34:39,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:40,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:40,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176383604] [2024-12-02 14:34:40,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176383604] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:40,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:40,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:34:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099603554] [2024-12-02 14:34:40,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:40,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:34:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:40,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:34:40,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:40,203 INFO L87 Difference]: Start difference. First operand has 582 states, 448 states have (on average 1.6763392857142858) internal successors, (751), 466 states have internal predecessors, (751), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:40,432 INFO L93 Difference]: Finished difference Result 1161 states and 1938 transitions. [2024-12-02 14:34:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:34:40,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2024-12-02 14:34:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:40,448 INFO L225 Difference]: With dead ends: 1161 [2024-12-02 14:34:40,448 INFO L226 Difference]: Without dead ends: 587 [2024-12-02 14:34:40,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:34:40,458 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 91 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5585 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:40,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5585 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:34:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-12-02 14:34:40,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2024-12-02 14:34:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 451 states have (on average 1.6674057649667406) internal successors, (752), 469 states have internal predecessors, (752), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-12-02 14:34:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 965 transitions. [2024-12-02 14:34:40,545 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 965 transitions. Word has length 113 [2024-12-02 14:34:40,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:40,545 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 965 transitions. [2024-12-02 14:34:40,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:40,546 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 965 transitions. [2024-12-02 14:34:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 14:34:40,551 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:40,552 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:40,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:34:40,552 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:40,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash 81295280, now seen corresponding path program 1 times [2024-12-02 14:34:40,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:40,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583830030] [2024-12-02 14:34:40,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:40,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:40,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583830030] [2024-12-02 14:34:40,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583830030] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:40,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:40,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:34:40,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528685713] [2024-12-02 14:34:40,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:40,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:34:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:40,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:34:40,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:40,850 INFO L87 Difference]: Start difference. First operand 585 states and 965 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:40,973 INFO L93 Difference]: Finished difference Result 1165 states and 1933 transitions. [2024-12-02 14:34:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:34:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2024-12-02 14:34:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:40,980 INFO L225 Difference]: With dead ends: 1165 [2024-12-02 14:34:40,980 INFO L226 Difference]: Without dead ends: 596 [2024-12-02 14:34:40,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:34:40,984 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 90 mSDsluCounter, 4639 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5586 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:40,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5586 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:34:40,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-12-02 14:34:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 585. [2024-12-02 14:34:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 451 states have (on average 1.6674057649667406) internal successors, (752), 469 states have internal predecessors, (752), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-12-02 14:34:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 965 transitions. [2024-12-02 14:34:41,019 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 965 transitions. Word has length 114 [2024-12-02 14:34:41,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:41,019 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 965 transitions. [2024-12-02 14:34:41,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 965 transitions. [2024-12-02 14:34:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 14:34:41,023 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:41,023 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:41,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:34:41,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:41,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash -771454386, now seen corresponding path program 1 times [2024-12-02 14:34:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171231451] [2024-12-02 14:34:41,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:41,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:41,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171231451] [2024-12-02 14:34:41,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171231451] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:41,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:41,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:34:41,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515087009] [2024-12-02 14:34:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:41,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:34:41,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:41,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:34:41,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:41,165 INFO L87 Difference]: Start difference. First operand 585 states and 965 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:41,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:41,217 INFO L93 Difference]: Finished difference Result 1152 states and 1911 transitions. [2024-12-02 14:34:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:34:41,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2024-12-02 14:34:41,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:41,221 INFO L225 Difference]: With dead ends: 1152 [2024-12-02 14:34:41,222 INFO L226 Difference]: Without dead ends: 555 [2024-12-02 14:34:41,224 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 14:34:41,224 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 14 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:41,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2800 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-12-02 14:34:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2024-12-02 14:34:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 424 states have (on average 1.650943396226415) internal successors, (700), 440 states have internal predecessors, (700), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:34:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 909 transitions. [2024-12-02 14:34:41,245 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 909 transitions. Word has length 114 [2024-12-02 14:34:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:41,245 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 909 transitions. [2024-12-02 14:34:41,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 909 transitions. [2024-12-02 14:34:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 14:34:41,247 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:41,248 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:41,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:34:41,248 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:41,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash 412045836, now seen corresponding path program 1 times [2024-12-02 14:34:41,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:41,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567261904] [2024-12-02 14:34:41,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:41,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:41,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567261904] [2024-12-02 14:34:41,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567261904] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:41,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:41,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:34:41,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091565338] [2024-12-02 14:34:41,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:41,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:34:41,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:41,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:34:41,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:41,433 INFO L87 Difference]: Start difference. First operand 555 states and 909 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:41,503 INFO L93 Difference]: Finished difference Result 1103 states and 1817 transitions. [2024-12-02 14:34:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:34:41,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2024-12-02 14:34:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:41,508 INFO L225 Difference]: With dead ends: 1103 [2024-12-02 14:34:41,508 INFO L226 Difference]: Without dead ends: 549 [2024-12-02 14:34:41,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:34:41,511 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 63 mSDsluCounter, 4437 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:41,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5336 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-12-02 14:34:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-12-02 14:34:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 418 states have (on average 1.6435406698564594) internal successors, (687), 434 states have internal predecessors, (687), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:34:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 896 transitions. [2024-12-02 14:34:41,534 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 896 transitions. Word has length 115 [2024-12-02 14:34:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:41,534 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 896 transitions. [2024-12-02 14:34:41,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 896 transitions. [2024-12-02 14:34:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:34:41,537 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:41,538 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:41,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:34:41,538 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:41,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:41,538 INFO L85 PathProgramCache]: Analyzing trace with hash 112341076, now seen corresponding path program 1 times [2024-12-02 14:34:41,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:41,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779950829] [2024-12-02 14:34:41,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:41,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:41,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779950829] [2024-12-02 14:34:41,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779950829] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:41,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:41,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:34:41,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882416216] [2024-12-02 14:34:41,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:41,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:34:41,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:41,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:34:41,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:41,708 INFO L87 Difference]: Start difference. First operand 549 states and 896 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:41,776 INFO L93 Difference]: Finished difference Result 1091 states and 1791 transitions. [2024-12-02 14:34:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:34:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-12-02 14:34:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:41,780 INFO L225 Difference]: With dead ends: 1091 [2024-12-02 14:34:41,780 INFO L226 Difference]: Without dead ends: 543 [2024-12-02 14:34:41,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:34:41,783 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 49 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5276 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:41,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5276 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-12-02 14:34:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-12-02 14:34:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6359223300970873) internal successors, (674), 428 states have internal predecessors, (674), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:34:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 883 transitions. [2024-12-02 14:34:41,800 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 883 transitions. Word has length 116 [2024-12-02 14:34:41,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:41,800 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 883 transitions. [2024-12-02 14:34:41,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 883 transitions. [2024-12-02 14:34:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:34:41,802 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:41,802 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:41,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:34:41,803 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:41,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash 860001749, now seen corresponding path program 1 times [2024-12-02 14:34:41,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:41,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859490404] [2024-12-02 14:34:41,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:41,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859490404] [2024-12-02 14:34:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859490404] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:41,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:41,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:34:41,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146728909] [2024-12-02 14:34:41,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:41,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:34:41,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:41,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:34:41,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:41,942 INFO L87 Difference]: Start difference. First operand 543 states and 883 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:42,013 INFO L93 Difference]: Finished difference Result 1079 states and 1765 transitions. [2024-12-02 14:34:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:34:42,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-12-02 14:34:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:42,017 INFO L225 Difference]: With dead ends: 1079 [2024-12-02 14:34:42,017 INFO L226 Difference]: Without dead ends: 543 [2024-12-02 14:34:42,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:34:42,019 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 24 mSDsluCounter, 4353 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5228 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:42,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5228 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:42,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-12-02 14:34:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-12-02 14:34:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.633495145631068) internal successors, (673), 428 states have internal predecessors, (673), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:34:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 882 transitions. [2024-12-02 14:34:42,035 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 882 transitions. Word has length 116 [2024-12-02 14:34:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:42,035 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 882 transitions. [2024-12-02 14:34:42,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 882 transitions. [2024-12-02 14:34:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:34:42,038 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:42,038 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:42,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:34:42,039 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:42,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1743358000, now seen corresponding path program 1 times [2024-12-02 14:34:42,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:42,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033848974] [2024-12-02 14:34:42,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:42,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:42,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:42,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033848974] [2024-12-02 14:34:42,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033848974] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:42,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:42,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:34:42,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548074516] [2024-12-02 14:34:42,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:42,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:34:42,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:42,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:34:42,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:42,146 INFO L87 Difference]: Start difference. First operand 543 states and 882 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:42,191 INFO L93 Difference]: Finished difference Result 1070 states and 1750 transitions. [2024-12-02 14:34:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:34:42,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2024-12-02 14:34:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:42,196 INFO L225 Difference]: With dead ends: 1070 [2024-12-02 14:34:42,196 INFO L226 Difference]: Without dead ends: 543 [2024-12-02 14:34:42,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:42,199 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 15 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:42,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2586 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-12-02 14:34:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-12-02 14:34:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6310679611650485) internal successors, (672), 428 states have internal predecessors, (672), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:34:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 881 transitions. [2024-12-02 14:34:42,215 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 881 transitions. Word has length 117 [2024-12-02 14:34:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:42,215 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 881 transitions. [2024-12-02 14:34:42,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:42,216 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 881 transitions. [2024-12-02 14:34:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:34:42,217 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:42,218 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:42,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:34:42,218 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:42,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash 981822644, now seen corresponding path program 1 times [2024-12-02 14:34:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:42,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711401941] [2024-12-02 14:34:42,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:42,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:42,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:42,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711401941] [2024-12-02 14:34:42,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711401941] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:42,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:42,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:34:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711782778] [2024-12-02 14:34:42,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:42,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:34:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:42,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:34:42,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:42,311 INFO L87 Difference]: Start difference. First operand 543 states and 881 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:42,356 INFO L93 Difference]: Finished difference Result 1070 states and 1748 transitions. [2024-12-02 14:34:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:34:42,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2024-12-02 14:34:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:42,361 INFO L225 Difference]: With dead ends: 1070 [2024-12-02 14:34:42,361 INFO L226 Difference]: Without dead ends: 543 [2024-12-02 14:34:42,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:42,364 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 14 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:42,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2588 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-12-02 14:34:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-12-02 14:34:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6286407766990292) internal successors, (671), 428 states have internal predecessors, (671), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:34:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 880 transitions. [2024-12-02 14:34:42,379 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 880 transitions. Word has length 118 [2024-12-02 14:34:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:42,379 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 880 transitions. [2024-12-02 14:34:42,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 880 transitions. [2024-12-02 14:34:42,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 14:34:42,381 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:42,381 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:42,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:34:42,381 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:42,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1392786485, now seen corresponding path program 1 times [2024-12-02 14:34:42,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:42,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282131144] [2024-12-02 14:34:42,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:42,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:42,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:42,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282131144] [2024-12-02 14:34:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282131144] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:42,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:42,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:34:42,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983736958] [2024-12-02 14:34:42,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:42,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:34:42,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:42,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:34:42,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:42,531 INFO L87 Difference]: Start difference. First operand 543 states and 880 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:42,594 INFO L93 Difference]: Finished difference Result 1070 states and 1746 transitions. [2024-12-02 14:34:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:34:42,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2024-12-02 14:34:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:42,600 INFO L225 Difference]: With dead ends: 1070 [2024-12-02 14:34:42,600 INFO L226 Difference]: Without dead ends: 543 [2024-12-02 14:34:42,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:42,604 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 13 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:42,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2590 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-12-02 14:34:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-12-02 14:34:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6262135922330097) internal successors, (670), 428 states have internal predecessors, (670), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:34:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 879 transitions. [2024-12-02 14:34:42,636 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 879 transitions. Word has length 119 [2024-12-02 14:34:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:42,636 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 879 transitions. [2024-12-02 14:34:42,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 879 transitions. [2024-12-02 14:34:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 14:34:42,640 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:42,640 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:42,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:34:42,640 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:42,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash -503480231, now seen corresponding path program 1 times [2024-12-02 14:34:42,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:42,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543941792] [2024-12-02 14:34:42,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:42,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:42,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:42,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543941792] [2024-12-02 14:34:42,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543941792] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:42,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:42,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:34:42,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492621294] [2024-12-02 14:34:42,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:42,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:34:42,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:42,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:34:42,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:42,792 INFO L87 Difference]: Start difference. First operand 543 states and 879 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:42,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:42,839 INFO L93 Difference]: Finished difference Result 1070 states and 1744 transitions. [2024-12-02 14:34:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:34:42,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2024-12-02 14:34:42,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:42,844 INFO L225 Difference]: With dead ends: 1070 [2024-12-02 14:34:42,844 INFO L226 Difference]: Without dead ends: 543 [2024-12-02 14:34:42,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:42,847 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 12 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:42,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2592 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-12-02 14:34:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-12-02 14:34:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6237864077669903) internal successors, (669), 428 states have internal predecessors, (669), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 14:34:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 878 transitions. [2024-12-02 14:34:42,870 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 878 transitions. Word has length 120 [2024-12-02 14:34:42,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:42,871 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 878 transitions. [2024-12-02 14:34:42,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:34:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 878 transitions. [2024-12-02 14:34:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 14:34:42,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:42,874 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:42,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:34:42,874 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:42,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -909450182, now seen corresponding path program 1 times [2024-12-02 14:34:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:42,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078760490] [2024-12-02 14:34:42,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:34:43,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:43,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078760490] [2024-12-02 14:34:43,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078760490] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:34:43,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873493106] [2024-12-02 14:34:43,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:43,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:34:43,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:34:43,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:34:43,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:34:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:43,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:34:43,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:34:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:34:43,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:34:43,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873493106] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:43,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:34:43,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 14:34:43,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013133515] [2024-12-02 14:34:43,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:43,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:34:43,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:43,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:34:43,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:43,621 INFO L87 Difference]: Start difference. First operand 543 states and 878 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:43,698 INFO L93 Difference]: Finished difference Result 1540 states and 2522 transitions. [2024-12-02 14:34:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:34:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2024-12-02 14:34:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:43,705 INFO L225 Difference]: With dead ends: 1540 [2024-12-02 14:34:43,705 INFO L226 Difference]: Without dead ends: 1015 [2024-12-02 14:34:43,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:43,709 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 801 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:43,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 2273 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2024-12-02 14:34:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1000. [2024-12-02 14:34:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 766 states have (on average 1.6370757180156659) internal successors, (1254), 797 states have internal predecessors, (1254), 187 states have call successors, (187), 47 states have call predecessors, (187), 46 states have return successors, (189), 181 states have call predecessors, (189), 184 states have call successors, (189) [2024-12-02 14:34:43,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1630 transitions. [2024-12-02 14:34:43,759 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1630 transitions. Word has length 121 [2024-12-02 14:34:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:43,759 INFO L471 AbstractCegarLoop]: Abstraction has 1000 states and 1630 transitions. [2024-12-02 14:34:43,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1630 transitions. [2024-12-02 14:34:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 14:34:43,764 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:43,764 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:43,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:34:43,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 14:34:43,965 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:43,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash -212264279, now seen corresponding path program 1 times [2024-12-02 14:34:43,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:43,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474548562] [2024-12-02 14:34:43,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:43,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:34:44,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:44,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474548562] [2024-12-02 14:34:44,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474548562] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:34:44,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540504943] [2024-12-02 14:34:44,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:44,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:34:44,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:34:44,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:34:44,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:34:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:44,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:34:44,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:34:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:34:44,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:34:44,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540504943] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:44,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:34:44,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 14:34:44,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525328655] [2024-12-02 14:34:44,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:44,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:34:44,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:44,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:34:44,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:44,659 INFO L87 Difference]: Start difference. First operand 1000 states and 1630 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:44,752 INFO L93 Difference]: Finished difference Result 2454 states and 4028 transitions. [2024-12-02 14:34:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:34:44,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2024-12-02 14:34:44,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:44,764 INFO L225 Difference]: With dead ends: 2454 [2024-12-02 14:34:44,764 INFO L226 Difference]: Without dead ends: 1472 [2024-12-02 14:34:44,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:44,771 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 803 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:44,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1712 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:44,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2024-12-02 14:34:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1424. [2024-12-02 14:34:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1093 states have (on average 1.6495882891125344) internal successors, (1803), 1139 states have internal predecessors, (1803), 265 states have call successors, (265), 65 states have call predecessors, (265), 65 states have return successors, (272), 258 states have call predecessors, (272), 262 states have call successors, (272) [2024-12-02 14:34:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2340 transitions. [2024-12-02 14:34:44,847 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2340 transitions. Word has length 122 [2024-12-02 14:34:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:44,848 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 2340 transitions. [2024-12-02 14:34:44,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:34:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2340 transitions. [2024-12-02 14:34:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 14:34:44,853 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:44,854 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:44,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:34:45,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:34:45,054 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:45,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:45,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1268213379, now seen corresponding path program 1 times [2024-12-02 14:34:45,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:45,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835264985] [2024-12-02 14:34:45,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:45,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 14:34:45,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:45,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835264985] [2024-12-02 14:34:45,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835264985] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:45,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:45,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:34:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080591190] [2024-12-02 14:34:45,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:45,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:34:45,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:45,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:34:45,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:34:45,237 INFO L87 Difference]: Start difference. First operand 1424 states and 2340 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:34:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:45,795 INFO L93 Difference]: Finished difference Result 4208 states and 7039 transitions. [2024-12-02 14:34:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:34:45,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2024-12-02 14:34:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:45,830 INFO L225 Difference]: With dead ends: 4208 [2024-12-02 14:34:45,830 INFO L226 Difference]: Without dead ends: 2802 [2024-12-02 14:34:45,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:34:45,838 INFO L435 NwaCegarLoop]: 977 mSDtfsCounter, 872 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 4499 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:45,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 4499 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:34:45,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2024-12-02 14:34:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2755. [2024-12-02 14:34:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2119 states have (on average 1.6531382727701747) internal successors, (3503), 2207 states have internal predecessors, (3503), 509 states have call successors, (509), 124 states have call predecessors, (509), 126 states have return successors, (603), 501 states have call predecessors, (603), 505 states have call successors, (603) [2024-12-02 14:34:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 4615 transitions. [2024-12-02 14:34:45,997 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 4615 transitions. Word has length 124 [2024-12-02 14:34:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:45,997 INFO L471 AbstractCegarLoop]: Abstraction has 2755 states and 4615 transitions. [2024-12-02 14:34:45,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:34:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 4615 transitions. [2024-12-02 14:34:46,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 14:34:46,003 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:46,003 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:46,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:34:46,003 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:46,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1080290138, now seen corresponding path program 1 times [2024-12-02 14:34:46,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:46,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138929200] [2024-12-02 14:34:46,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:46,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 14:34:46,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:46,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138929200] [2024-12-02 14:34:46,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138929200] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:34:46,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136283766] [2024-12-02 14:34:46,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:46,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:34:46,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:34:46,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:34:46,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:34:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:46,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:34:46,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:34:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:34:46,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:34:46,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136283766] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:46,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:34:46,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 14:34:46,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869458070] [2024-12-02 14:34:46,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:46,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:34:46,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:46,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:34:46,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:46,678 INFO L87 Difference]: Start difference. First operand 2755 states and 4615 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:34:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:47,107 INFO L93 Difference]: Finished difference Result 7975 states and 13550 transitions. [2024-12-02 14:34:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:34:47,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-12-02 14:34:47,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:47,145 INFO L225 Difference]: With dead ends: 7975 [2024-12-02 14:34:47,145 INFO L226 Difference]: Without dead ends: 5239 [2024-12-02 14:34:47,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:47,163 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 713 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:47,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1629 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:34:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2024-12-02 14:34:47,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 5202. [2024-12-02 14:34:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 3988 states have (on average 1.6208625877632898) internal successors, (6464), 4162 states have internal predecessors, (6464), 966 states have call successors, (966), 242 states have call predecessors, (966), 247 states have return successors, (1251), 953 states have call predecessors, (1251), 960 states have call successors, (1251) [2024-12-02 14:34:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 8681 transitions. [2024-12-02 14:34:47,451 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 8681 transitions. Word has length 125 [2024-12-02 14:34:47,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:47,452 INFO L471 AbstractCegarLoop]: Abstraction has 5202 states and 8681 transitions. [2024-12-02 14:34:47,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:34:47,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 8681 transitions. [2024-12-02 14:34:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 14:34:47,457 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:47,458 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:47,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:34:47,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 14:34:47,658 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:47,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:47,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1297740956, now seen corresponding path program 1 times [2024-12-02 14:34:47,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:47,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524243789] [2024-12-02 14:34:47,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:47,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 14:34:47,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524243789] [2024-12-02 14:34:47,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524243789] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:34:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493190103] [2024-12-02 14:34:47,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:47,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:34:47,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:34:47,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:34:47,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:34:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:48,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:34:48,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:34:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:34:48,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:34:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493190103] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:48,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:34:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 14:34:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135982891] [2024-12-02 14:34:48,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:48,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:34:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:48,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:34:48,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:48,241 INFO L87 Difference]: Start difference. First operand 5202 states and 8681 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:34:48,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:48,681 INFO L93 Difference]: Finished difference Result 15492 states and 26176 transitions. [2024-12-02 14:34:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:34:48,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-12-02 14:34:48,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:48,744 INFO L225 Difference]: With dead ends: 15492 [2024-12-02 14:34:48,744 INFO L226 Difference]: Without dead ends: 10311 [2024-12-02 14:34:48,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:48,768 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 863 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:48,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1732 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:48,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10311 states. [2024-12-02 14:34:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10311 to 10208. [2024-12-02 14:34:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10208 states, 7852 states have (on average 1.6244268976057055) internal successors, (12755), 8180 states have internal predecessors, (12755), 1872 states have call successors, (1872), 466 states have call predecessors, (1872), 483 states have return successors, (2496), 1867 states have call predecessors, (2496), 1862 states have call successors, (2496) [2024-12-02 14:34:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10208 states to 10208 states and 17123 transitions. [2024-12-02 14:34:49,311 INFO L78 Accepts]: Start accepts. Automaton has 10208 states and 17123 transitions. Word has length 127 [2024-12-02 14:34:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:49,311 INFO L471 AbstractCegarLoop]: Abstraction has 10208 states and 17123 transitions. [2024-12-02 14:34:49,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:34:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 10208 states and 17123 transitions. [2024-12-02 14:34:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 14:34:49,318 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:49,318 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:49,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:34:49,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 14:34:49,518 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:49,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:49,519 INFO L85 PathProgramCache]: Analyzing trace with hash 286623706, now seen corresponding path program 1 times [2024-12-02 14:34:49,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:49,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245598875] [2024-12-02 14:34:49,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:49,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 14:34:49,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:49,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245598875] [2024-12-02 14:34:49,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245598875] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:34:49,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514164092] [2024-12-02 14:34:49,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:49,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:34:49,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:34:49,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:34:49,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:34:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:50,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 14:34:50,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:34:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:34:50,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:34:50,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514164092] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:50,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:34:50,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-02 14:34:50,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122771086] [2024-12-02 14:34:50,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:50,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:34:50,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:50,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:34:50,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:34:50,137 INFO L87 Difference]: Start difference. First operand 10208 states and 17123 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 14:34:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:51,221 INFO L93 Difference]: Finished difference Result 19297 states and 32436 transitions. [2024-12-02 14:34:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:34:51,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2024-12-02 14:34:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:51,284 INFO L225 Difference]: With dead ends: 19297 [2024-12-02 14:34:51,284 INFO L226 Difference]: Without dead ends: 9107 [2024-12-02 14:34:51,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:34:51,338 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 733 mSDsluCounter, 3122 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:51,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 4046 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:34:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2024-12-02 14:34:51,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 9085. [2024-12-02 14:34:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9085 states, 7005 states have (on average 1.6107066381156316) internal successors, (11283), 7280 states have internal predecessors, (11283), 1638 states have call successors, (1638), 426 states have call predecessors, (1638), 441 states have return successors, (2158), 1634 states have call predecessors, (2158), 1628 states have call successors, (2158) [2024-12-02 14:34:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9085 states to 9085 states and 15079 transitions. [2024-12-02 14:34:51,777 INFO L78 Accepts]: Start accepts. Automaton has 9085 states and 15079 transitions. Word has length 127 [2024-12-02 14:34:51,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:51,777 INFO L471 AbstractCegarLoop]: Abstraction has 9085 states and 15079 transitions. [2024-12-02 14:34:51,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 14:34:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9085 states and 15079 transitions. [2024-12-02 14:34:51,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 14:34:51,781 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:51,781 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:51,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 14:34:51,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 14:34:51,982 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:51,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:51,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1318334234, now seen corresponding path program 1 times [2024-12-02 14:34:51,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:51,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307058839] [2024-12-02 14:34:51,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:51,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:34:52,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:52,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307058839] [2024-12-02 14:34:52,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307058839] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:52,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:52,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:34:52,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548147010] [2024-12-02 14:34:52,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:52,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:34:52,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:52,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:34:52,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:52,082 INFO L87 Difference]: Start difference. First operand 9085 states and 15079 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:34:52,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:52,498 INFO L93 Difference]: Finished difference Result 18200 states and 30553 transitions. [2024-12-02 14:34:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:34:52,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-12-02 14:34:52,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:52,552 INFO L225 Difference]: With dead ends: 18200 [2024-12-02 14:34:52,552 INFO L226 Difference]: Without dead ends: 9133 [2024-12-02 14:34:52,596 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 14:34:52,597 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 12 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:52,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2558 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9133 states. [2024-12-02 14:34:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9133 to 9101. [2024-12-02 14:34:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9101 states, 7017 states have (on average 1.60909220464586) internal successors, (11291), 7292 states have internal predecessors, (11291), 1638 states have call successors, (1638), 434 states have call predecessors, (1638), 445 states have return successors, (2132), 1630 states have call predecessors, (2132), 1628 states have call successors, (2132) [2024-12-02 14:34:52,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9101 states to 9101 states and 15061 transitions. [2024-12-02 14:34:52,965 INFO L78 Accepts]: Start accepts. Automaton has 9101 states and 15061 transitions. Word has length 127 [2024-12-02 14:34:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:52,965 INFO L471 AbstractCegarLoop]: Abstraction has 9101 states and 15061 transitions. [2024-12-02 14:34:52,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:34:52,965 INFO L276 IsEmpty]: Start isEmpty. Operand 9101 states and 15061 transitions. [2024-12-02 14:34:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-02 14:34:52,969 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:52,969 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:52,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:34:52,969 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:52,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:52,970 INFO L85 PathProgramCache]: Analyzing trace with hash -73480786, now seen corresponding path program 1 times [2024-12-02 14:34:52,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:52,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226355540] [2024-12-02 14:34:52,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:52,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 14:34:53,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:53,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226355540] [2024-12-02 14:34:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226355540] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:53,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:34:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220892264] [2024-12-02 14:34:53,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:53,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:34:53,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:53,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:34:53,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:34:53,159 INFO L87 Difference]: Start difference. First operand 9101 states and 15061 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 14:34:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:54,088 INFO L93 Difference]: Finished difference Result 27249 states and 46349 transitions. [2024-12-02 14:34:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:34:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2024-12-02 14:34:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:54,183 INFO L225 Difference]: With dead ends: 27249 [2024-12-02 14:34:54,183 INFO L226 Difference]: Without dead ends: 18166 [2024-12-02 14:34:54,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:34:54,230 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 866 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:54,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 4386 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:34:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18166 states. [2024-12-02 14:34:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18166 to 18065. [2024-12-02 14:34:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18065 states, 13940 states have (on average 1.6055954088952655) internal successors, (22382), 14481 states have internal predecessors, (22382), 3231 states have call successors, (3231), 862 states have call predecessors, (3231), 893 states have return successors, (4933), 3233 states have call predecessors, (4933), 3213 states have call successors, (4933) [2024-12-02 14:34:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18065 states to 18065 states and 30546 transitions. [2024-12-02 14:34:55,110 INFO L78 Accepts]: Start accepts. Automaton has 18065 states and 30546 transitions. Word has length 135 [2024-12-02 14:34:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:55,110 INFO L471 AbstractCegarLoop]: Abstraction has 18065 states and 30546 transitions. [2024-12-02 14:34:55,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 14:34:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 18065 states and 30546 transitions. [2024-12-02 14:34:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 14:34:55,114 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:55,114 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:55,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:34:55,114 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:55,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1831930979, now seen corresponding path program 1 times [2024-12-02 14:34:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:55,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510578802] [2024-12-02 14:34:55,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:55,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 14:34:55,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:55,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510578802] [2024-12-02 14:34:55,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510578802] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:55,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:55,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:34:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983262116] [2024-12-02 14:34:55,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:55,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:34:55,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:55,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:34:55,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:34:55,207 INFO L87 Difference]: Start difference. First operand 18065 states and 30546 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:34:56,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:56,123 INFO L93 Difference]: Finished difference Result 36256 states and 62315 transitions. [2024-12-02 14:34:56,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:34:56,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2024-12-02 14:34:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:56,232 INFO L225 Difference]: With dead ends: 36256 [2024-12-02 14:34:56,232 INFO L226 Difference]: Without dead ends: 18209 [2024-12-02 14:34:56,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:34:56,350 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 12 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:56,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2552 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18209 states. [2024-12-02 14:34:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18209 to 18145. [2024-12-02 14:34:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18145 states, 14012 states have (on average 1.6030545246931203) internal successors, (22462), 14537 states have internal predecessors, (22462), 3231 states have call successors, (3231), 894 states have call predecessors, (3231), 901 states have return successors, (4893), 3225 states have call predecessors, (4893), 3213 states have call successors, (4893) [2024-12-02 14:34:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18145 states to 18145 states and 30586 transitions. [2024-12-02 14:34:57,113 INFO L78 Accepts]: Start accepts. Automaton has 18145 states and 30586 transitions. Word has length 136 [2024-12-02 14:34:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:57,113 INFO L471 AbstractCegarLoop]: Abstraction has 18145 states and 30586 transitions. [2024-12-02 14:34:57,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 14:34:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 18145 states and 30586 transitions. [2024-12-02 14:34:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 14:34:57,117 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:57,117 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:34:57,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:34:57,118 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:57,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash 731579524, now seen corresponding path program 1 times [2024-12-02 14:34:57,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:57,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529479730] [2024-12-02 14:34:57,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:57,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 14:34:57,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:57,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529479730] [2024-12-02 14:34:57,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529479730] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:57,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:57,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:34:57,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562749291] [2024-12-02 14:34:57,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:57,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:34:57,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:57,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:34:57,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:34:57,281 INFO L87 Difference]: Start difference. First operand 18145 states and 30586 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 14:34:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:58,888 INFO L93 Difference]: Finished difference Result 54521 states and 95593 transitions. [2024-12-02 14:34:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:34:58,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-12-02 14:34:58,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:59,108 INFO L225 Difference]: With dead ends: 54521 [2024-12-02 14:34:59,108 INFO L226 Difference]: Without dead ends: 36394 [2024-12-02 14:34:59,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:34:59,240 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 863 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:59,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 4356 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:34:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36394 states. [2024-12-02 14:35:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36394 to 36229. [2024-12-02 14:35:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36229 states, 27987 states have (on average 1.5995640833244007) internal successors, (44767), 29028 states have internal predecessors, (44767), 6428 states have call successors, (6428), 1782 states have call predecessors, (6428), 1813 states have return successors, (11830), 6442 states have call predecessors, (11830), 6394 states have call successors, (11830) [2024-12-02 14:35:00,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36229 states to 36229 states and 63025 transitions. [2024-12-02 14:35:00,599 INFO L78 Accepts]: Start accepts. Automaton has 36229 states and 63025 transitions. Word has length 145 [2024-12-02 14:35:00,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:00,599 INFO L471 AbstractCegarLoop]: Abstraction has 36229 states and 63025 transitions. [2024-12-02 14:35:00,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 14:35:00,599 INFO L276 IsEmpty]: Start isEmpty. Operand 36229 states and 63025 transitions. [2024-12-02 14:35:00,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 14:35:00,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:00,602 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:00,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:35:00,602 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:00,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:00,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1444869681, now seen corresponding path program 1 times [2024-12-02 14:35:00,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:00,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323641138] [2024-12-02 14:35:00,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:00,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 14:35:00,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:00,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323641138] [2024-12-02 14:35:00,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323641138] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:00,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:00,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820672043] [2024-12-02 14:35:00,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:00,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:00,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:00,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:00,691 INFO L87 Difference]: Start difference. First operand 36229 states and 63025 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 14:35:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:02,139 INFO L93 Difference]: Finished difference Result 72728 states and 129849 transitions. [2024-12-02 14:35:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:35:02,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2024-12-02 14:35:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:02,392 INFO L225 Difference]: With dead ends: 72728 [2024-12-02 14:35:02,392 INFO L226 Difference]: Without dead ends: 36517 [2024-12-02 14:35:02,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:35:02,790 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 11 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:02,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2552 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36517 states. [2024-12-02 14:35:03,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36517 to 36389. [2024-12-02 14:35:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36389 states, 28131 states have (on average 1.5970637375137748) internal successors, (44927), 29172 states have internal predecessors, (44927), 6428 states have call successors, (6428), 1814 states have call predecessors, (6428), 1829 states have return successors, (11774), 6426 states have call predecessors, (11774), 6394 states have call successors, (11774) [2024-12-02 14:35:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36389 states to 36389 states and 63129 transitions. [2024-12-02 14:35:04,079 INFO L78 Accepts]: Start accepts. Automaton has 36389 states and 63129 transitions. Word has length 146 [2024-12-02 14:35:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:04,080 INFO L471 AbstractCegarLoop]: Abstraction has 36389 states and 63129 transitions. [2024-12-02 14:35:04,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 14:35:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 36389 states and 63129 transitions. [2024-12-02 14:35:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:35:04,084 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:04,084 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:04,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:35:04,084 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:04,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash 383039175, now seen corresponding path program 1 times [2024-12-02 14:35:04,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:04,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377279771] [2024-12-02 14:35:04,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:04,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 14:35:04,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:04,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377279771] [2024-12-02 14:35:04,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377279771] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:04,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:04,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:35:04,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941381542] [2024-12-02 14:35:04,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:04,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:35:04,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:04,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:35:04,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:35:04,265 INFO L87 Difference]: Start difference. First operand 36389 states and 63129 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:35:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:07,525 INFO L93 Difference]: Finished difference Result 109489 states and 201915 transitions. [2024-12-02 14:35:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:35:07,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-12-02 14:35:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:07,929 INFO L225 Difference]: With dead ends: 109489 [2024-12-02 14:35:07,929 INFO L226 Difference]: Without dead ends: 73118 [2024-12-02 14:35:08,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:35:08,208 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 857 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:08,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 4334 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:35:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73118 states. [2024-12-02 14:35:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73118 to 72825. [2024-12-02 14:35:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72825 states, 56306 states have (on average 1.5944304337015593) internal successors, (89776), 58379 states have internal predecessors, (89776), 12833 states have call successors, (12833), 3622 states have call predecessors, (12833), 3685 states have return successors, (30215), 12871 states have call predecessors, (30215), 12767 states have call successors, (30215) [2024-12-02 14:35:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72825 states to 72825 states and 132824 transitions. [2024-12-02 14:35:11,209 INFO L78 Accepts]: Start accepts. Automaton has 72825 states and 132824 transitions. Word has length 156 [2024-12-02 14:35:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:11,209 INFO L471 AbstractCegarLoop]: Abstraction has 72825 states and 132824 transitions. [2024-12-02 14:35:11,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 14:35:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 72825 states and 132824 transitions. [2024-12-02 14:35:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 14:35:11,215 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:11,215 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:11,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 14:35:11,215 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:11,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1835276852, now seen corresponding path program 1 times [2024-12-02 14:35:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:11,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435541911] [2024-12-02 14:35:11,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 14:35:11,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:11,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435541911] [2024-12-02 14:35:11,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435541911] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:11,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:11,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:11,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127406789] [2024-12-02 14:35:11,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:11,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:11,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:11,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:11,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:11,308 INFO L87 Difference]: Start difference. First operand 72825 states and 132824 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:35:15,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:15,596 INFO L93 Difference]: Finished difference Result 146272 states and 278335 transitions. [2024-12-02 14:35:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:35:15,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2024-12-02 14:35:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:15,943 INFO L225 Difference]: With dead ends: 146272 [2024-12-02 14:35:15,943 INFO L226 Difference]: Without dead ends: 73465 [2024-12-02 14:35:16,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:35:16,713 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 10 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:16,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2552 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73465 states. [2024-12-02 14:35:19,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73465 to 73209. [2024-12-02 14:35:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73209 states, 56658 states have (on average 1.5913021991598715) internal successors, (90160), 58731 states have internal predecessors, (90160), 12833 states have call successors, (12833), 3686 states have call predecessors, (12833), 3717 states have return successors, (30151), 12839 states have call predecessors, (30151), 12767 states have call successors, (30151) [2024-12-02 14:35:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73209 states to 73209 states and 133144 transitions. [2024-12-02 14:35:20,581 INFO L78 Accepts]: Start accepts. Automaton has 73209 states and 133144 transitions. Word has length 157 [2024-12-02 14:35:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:20,582 INFO L471 AbstractCegarLoop]: Abstraction has 73209 states and 133144 transitions. [2024-12-02 14:35:20,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:35:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 73209 states and 133144 transitions. [2024-12-02 14:35:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 14:35:20,589 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:20,589 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:20,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:35:20,589 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:20,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1462153363, now seen corresponding path program 1 times [2024-12-02 14:35:20,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:20,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738935458] [2024-12-02 14:35:20,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:20,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 14:35:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:20,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738935458] [2024-12-02 14:35:20,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738935458] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:35:20,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554362168] [2024-12-02 14:35:20,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:20,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:20,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:20,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:20,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:35:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:21,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 14:35:21,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 14:35:21,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:21,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554362168] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:21,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:35:21,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-02 14:35:21,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385497489] [2024-12-02 14:35:21,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:21,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:35:21,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:21,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:35:21,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:35:21,512 INFO L87 Difference]: Start difference. First operand 73209 states and 133144 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 14:35:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:26,817 INFO L93 Difference]: Finished difference Result 179317 states and 340193 transitions. [2024-12-02 14:35:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:35:26,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 168 [2024-12-02 14:35:26,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:27,397 INFO L225 Difference]: With dead ends: 179317 [2024-12-02 14:35:27,397 INFO L226 Difference]: Without dead ends: 106078 [2024-12-02 14:35:28,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:35:28,290 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 860 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:28,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 3910 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:35:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106078 states. [2024-12-02 14:35:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106078 to 105870. [2024-12-02 14:35:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105870 states, 82079 states have (on average 1.5736546497886184) internal successors, (129164), 84868 states have internal predecessors, (129164), 18189 states have call successors, (18189), 5602 states have call predecessors, (18189), 5601 states have return successors, (44421), 18069 states have call predecessors, (44421), 18107 states have call successors, (44421) [2024-12-02 14:35:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105870 states to 105870 states and 191774 transitions. [2024-12-02 14:35:32,641 INFO L78 Accepts]: Start accepts. Automaton has 105870 states and 191774 transitions. Word has length 168 [2024-12-02 14:35:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:32,641 INFO L471 AbstractCegarLoop]: Abstraction has 105870 states and 191774 transitions. [2024-12-02 14:35:32,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 14:35:32,641 INFO L276 IsEmpty]: Start isEmpty. Operand 105870 states and 191774 transitions. [2024-12-02 14:35:32,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-12-02 14:35:32,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:32,650 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:32,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:35:32,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 14:35:32,851 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:32,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:32,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1161461788, now seen corresponding path program 1 times [2024-12-02 14:35:32,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:32,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304446702] [2024-12-02 14:35:32,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:32,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:35:32,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:32,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304446702] [2024-12-02 14:35:32,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304446702] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:35:32,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883256891] [2024-12-02 14:35:32,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:32,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:32,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:32,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:32,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:35:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:33,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:35:33,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 14:35:33,409 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:33,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883256891] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:33,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:35:33,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-02 14:35:33,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633685876] [2024-12-02 14:35:33,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:33,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:35:33,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:33,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:35:33,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:35:33,410 INFO L87 Difference]: Start difference. First operand 105870 states and 191774 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-02 14:35:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:46,626 INFO L93 Difference]: Finished difference Result 288923 states and 583096 transitions. [2024-12-02 14:35:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:35:46,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 201 [2024-12-02 14:35:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:48,194 INFO L225 Difference]: With dead ends: 288923 [2024-12-02 14:35:48,194 INFO L226 Difference]: Without dead ends: 177231 [2024-12-02 14:35:49,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:35:49,247 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 2388 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 4672 mSolverCounterSat, 848 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 5520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 848 IncrementalHoareTripleChecker+Valid, 4672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:49,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 2095 Invalid, 5520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [848 Valid, 4672 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 14:35:49,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177231 states. [2024-12-02 14:35:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177231 to 159287. [2024-12-02 14:35:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159287 states, 123335 states have (on average 1.5663436980581344) internal successors, (193185), 127533 states have internal predecessors, (193185), 27392 states have call successors, (27392), 8128 states have call predecessors, (27392), 8559 states have return successors, (78585), 27302 states have call predecessors, (78585), 27278 states have call successors, (78585) [2024-12-02 14:35:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159287 states to 159287 states and 299162 transitions. [2024-12-02 14:35:58,125 INFO L78 Accepts]: Start accepts. Automaton has 159287 states and 299162 transitions. Word has length 201 [2024-12-02 14:35:58,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:58,126 INFO L471 AbstractCegarLoop]: Abstraction has 159287 states and 299162 transitions. [2024-12-02 14:35:58,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-02 14:35:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 159287 states and 299162 transitions. [2024-12-02 14:35:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-12-02 14:35:58,136 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:58,136 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:58,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:35:58,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 14:35:58,337 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:58,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1991496560, now seen corresponding path program 1 times [2024-12-02 14:35:58,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:58,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026635102] [2024-12-02 14:35:58,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-12-02 14:35:58,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:58,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026635102] [2024-12-02 14:35:58,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026635102] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:35:58,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329117552] [2024-12-02 14:35:58,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:58,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:58,527 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:58,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:35:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:58,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:35:58,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 14:35:58,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:58,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329117552] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:58,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:35:58,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 14:35:58,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550983653] [2024-12-02 14:35:58,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:58,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:35:58,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:58,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:35:58,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:35:58,987 INFO L87 Difference]: Start difference. First operand 159287 states and 299162 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 14:36:09,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:36:09,756 INFO L93 Difference]: Finished difference Result 323164 states and 654629 transitions. [2024-12-02 14:36:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:36:09,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 235 [2024-12-02 14:36:09,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:36:11,031 INFO L225 Difference]: With dead ends: 323164 [2024-12-02 14:36:11,031 INFO L226 Difference]: Without dead ends: 163895 [2024-12-02 14:36:13,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:36:13,278 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 797 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:36:13,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 2168 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:36:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163895 states. [2024-12-02 14:36:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163895 to 163895. [2024-12-02 14:36:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163895 states, 127367 states have (on average 1.57102703211978) internal successors, (200097), 131565 states have internal predecessors, (200097), 27392 states have call successors, (27392), 8704 states have call predecessors, (27392), 9135 states have return successors, (78886), 27302 states have call predecessors, (78886), 27278 states have call successors, (78886) [2024-12-02 14:36:21,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163895 states to 163895 states and 306375 transitions. [2024-12-02 14:36:21,535 INFO L78 Accepts]: Start accepts. Automaton has 163895 states and 306375 transitions. Word has length 235 [2024-12-02 14:36:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:36:21,536 INFO L471 AbstractCegarLoop]: Abstraction has 163895 states and 306375 transitions. [2024-12-02 14:36:21,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 14:36:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand 163895 states and 306375 transitions. [2024-12-02 14:36:21,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-12-02 14:36:21,545 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:36:21,545 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:21,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 14:36:21,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 14:36:21,746 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:36:21,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:36:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1516505968, now seen corresponding path program 1 times [2024-12-02 14:36:21,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:36:21,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987921234] [2024-12-02 14:36:21,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:21,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:36:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-12-02 14:36:21,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:36:21,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987921234] [2024-12-02 14:36:21,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987921234] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:36:21,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004000818] [2024-12-02 14:36:21,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:21,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:36:21,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:36:21,966 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:36:21,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 14:36:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:22,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:36:22,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:36:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 14:36:22,440 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:36:22,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004000818] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:36:22,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:36:22,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 14:36:22,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491167512] [2024-12-02 14:36:22,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:36:22,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:36:22,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:36:22,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:36:22,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:36:22,441 INFO L87 Difference]: Start difference. First operand 163895 states and 306375 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 14:36:33,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:36:33,444 INFO L93 Difference]: Finished difference Result 332380 states and 668175 transitions. [2024-12-02 14:36:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:36:33,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 239 [2024-12-02 14:36:33,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:36:34,646 INFO L225 Difference]: With dead ends: 332380 [2024-12-02 14:36:34,646 INFO L226 Difference]: Without dead ends: 168503 [2024-12-02 14:36:37,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:36:37,031 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 791 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:36:37,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 2165 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:36:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168503 states. [2024-12-02 14:36:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168503 to 168503. [2024-12-02 14:36:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168503 states, 131399 states have (on average 1.575422948424265) internal successors, (207009), 135597 states have internal predecessors, (207009), 27392 states have call successors, (27392), 9280 states have call predecessors, (27392), 9711 states have return successors, (79187), 27302 states have call predecessors, (79187), 27278 states have call successors, (79187) [2024-12-02 14:36:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168503 states to 168503 states and 313588 transitions. [2024-12-02 14:36:45,380 INFO L78 Accepts]: Start accepts. Automaton has 168503 states and 313588 transitions. Word has length 239 [2024-12-02 14:36:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:36:45,380 INFO L471 AbstractCegarLoop]: Abstraction has 168503 states and 313588 transitions. [2024-12-02 14:36:45,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 14:36:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 168503 states and 313588 transitions. [2024-12-02 14:36:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-12-02 14:36:45,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:36:45,390 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:45,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 14:36:45,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 14:36:45,590 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:36:45,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:36:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash 981236208, now seen corresponding path program 1 times [2024-12-02 14:36:45,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:36:45,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259997856] [2024-12-02 14:36:45,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:45,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:36:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-12-02 14:36:45,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:36:45,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259997856] [2024-12-02 14:36:45,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259997856] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:36:45,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465785239] [2024-12-02 14:36:45,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:45,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:36:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:36:45,826 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:36:45,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 14:36:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:46,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 2157 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:36:46,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:36:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-12-02 14:36:46,269 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:36:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465785239] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:36:46,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:36:46,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 14:36:46,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035412535] [2024-12-02 14:36:46,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:36:46,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:36:46,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:36:46,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:36:46,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:36:46,270 INFO L87 Difference]: Start difference. First operand 168503 states and 313588 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 14:36:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:36:56,925 INFO L93 Difference]: Finished difference Result 341596 states and 681801 transitions. [2024-12-02 14:36:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:36:56,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 243 [2024-12-02 14:36:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:36:58,585 INFO L225 Difference]: With dead ends: 341596 [2024-12-02 14:36:58,586 INFO L226 Difference]: Without dead ends: 173111 [2024-12-02 14:37:00,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:37:00,891 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 783 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:00,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 2162 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:37:00,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173111 states. [2024-12-02 14:37:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173111 to 173111. [2024-12-02 14:37:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173111 states, 135431 states have (on average 1.5795571176466245) internal successors, (213921), 139629 states have internal predecessors, (213921), 27392 states have call successors, (27392), 9856 states have call predecessors, (27392), 10287 states have return successors, (79488), 27302 states have call predecessors, (79488), 27278 states have call successors, (79488) [2024-12-02 14:37:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173111 states to 173111 states and 320801 transitions. [2024-12-02 14:37:09,206 INFO L78 Accepts]: Start accepts. Automaton has 173111 states and 320801 transitions. Word has length 243 [2024-12-02 14:37:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:09,207 INFO L471 AbstractCegarLoop]: Abstraction has 173111 states and 320801 transitions. [2024-12-02 14:37:09,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 14:37:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 173111 states and 320801 transitions. [2024-12-02 14:37:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-12-02 14:37:09,218 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:09,218 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:09,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:37:09,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 14:37:09,419 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:09,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1175501296, now seen corresponding path program 1 times [2024-12-02 14:37:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:09,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97048588] [2024-12-02 14:37:09,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:09,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 23 proven. 27 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-12-02 14:37:09,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:09,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97048588] [2024-12-02 14:37:09,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97048588] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:37:09,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302816280] [2024-12-02 14:37:09,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:09,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:37:09,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:37:09,656 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:37:09,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_899699de-1d70-4875-92fe-7ef92f2f5be5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 14:37:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:09,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:37:09,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:37:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-12-02 14:37:10,100 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:37:10,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302816280] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:10,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:37:10,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 14:37:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175419410] [2024-12-02 14:37:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:10,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:37:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:10,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:37:10,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:37:10,101 INFO L87 Difference]: Start difference. First operand 173111 states and 320801 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25)