./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.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_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/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_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/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_7812e8f7-8127-41f1-af48-adb6de26847f/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 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:07:32,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:07:32,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 23:07:32,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:07:32,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:07:32,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:07:32,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:07:32,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:07:32,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:07:32,612 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:07:32,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:07:32,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:07:32,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:07:32,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:07:32,613 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:07:32,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:07:32,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:07:32,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:07:32,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:07:32,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:07:32,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:07:32,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:07:32,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:07:32,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:07:32,614 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:07:32,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:07:32,615 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:07:32,615 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:07:32,615 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:07:32,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:07:32,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:07:32,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:07:32,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:07:32,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:07:32,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:07:32,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:07:32,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:07:32,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:07:32,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:07:32,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:07:32,616 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:07:32,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:07:32,617 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:07:32,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:07:32,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:07:32,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:07:32,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:07:32,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:07:32,617 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_7812e8f7-8127-41f1-af48-adb6de26847f/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 -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2024-12-01 23:07:32,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:07:32,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:07:32,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:07:32,870 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:07:32,870 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:07:32,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2024-12-01 23:07:36,047 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/data/6fffa8e2f/ae0279000cab4698940439a18704d59f/FLAG45d667e74 [2024-12-01 23:07:36,326 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:07:36,327 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2024-12-01 23:07:36,343 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/data/6fffa8e2f/ae0279000cab4698940439a18704d59f/FLAG45d667e74 [2024-12-01 23:07:36,356 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/data/6fffa8e2f/ae0279000cab4698940439a18704d59f [2024-12-01 23:07:36,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:07:36,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:07:36,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:07:36,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:07:36,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:07:36,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:36,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9c153c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36, skipping insertion in model container [2024-12-01 23:07:36,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:36,415 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:07:36,836 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_7812e8f7-8127-41f1-af48-adb6de26847f/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2024-12-01 23:07:36,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:07:36,850 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:07:36,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2024-12-01 23:07:36,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1613] [2024-12-01 23:07:36,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1707] [2024-12-01 23:07:36,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [1825] [2024-12-01 23:07:36,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2012] [2024-12-01 23:07:36,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2030] [2024-12-01 23:07:36,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2381] [2024-12-01 23:07:36,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3042] [2024-12-01 23:07:36,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3077] [2024-12-01 23:07:36,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3443] [2024-12-01 23:07:36,959 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_7812e8f7-8127-41f1-af48-adb6de26847f/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2024-12-01 23:07:36,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:07:36,985 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:07:36,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36 WrapperNode [2024-12-01 23:07:36,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:07:36,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:07:36,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:07:36,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:07:36,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,050 INFO L138 Inliner]: procedures = 93, calls = 348, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1133 [2024-12-01 23:07:37,050 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:07:37,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:07:37,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:07:37,051 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:07:37,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,066 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,088 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 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]. [2024-12-01 23:07:37,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,107 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:07:37,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:07:37,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:07:37,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:07:37,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (1/1) ... [2024-12-01 23:07:37,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:07:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:37,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:07:37,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:07:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:07:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-01 23:07:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-01 23:07:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-01 23:07:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-01 23:07:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-01 23:07:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-01 23:07:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-01 23:07:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-01 23:07:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-01 23:07:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-01 23:07:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-01 23:07:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-01 23:07:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-01 23:07:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-01 23:07:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-01 23:07:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-01 23:07:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-01 23:07:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-01 23:07:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-01 23:07:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-01 23:07:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-01 23:07:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-01 23:07:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-01 23:07:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-01 23:07:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-01 23:07:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-01 23:07:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-01 23:07:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-01 23:07:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-01 23:07:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-01 23:07:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-01 23:07:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-12-01 23:07:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-01 23:07:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-01 23:07:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-01 23:07:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-01 23:07:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-01 23:07:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-01 23:07:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-01 23:07:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-01 23:07:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-01 23:07:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-01 23:07:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-01 23:07:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-01 23:07:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-01 23:07:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-01 23:07:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-01 23:07:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:07:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:07:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-01 23:07:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-01 23:07:37,362 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:07:37,363 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:07:38,577 INFO L? ?]: Removed 469 outVars from TransFormulas that were not future-live. [2024-12-01 23:07:38,577 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:07:38,602 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:07:38,603 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 23:07:38,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:07:38 BoogieIcfgContainer [2024-12-01 23:07:38,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:07:38,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:07:38,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:07:38,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:07:38,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:07:36" (1/3) ... [2024-12-01 23:07:38,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caa5cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:07:38, skipping insertion in model container [2024-12-01 23:07:38,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:07:36" (2/3) ... [2024-12-01 23:07:38,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caa5cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:07:38, skipping insertion in model container [2024-12-01 23:07:38,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:07:38" (3/3) ... [2024-12-01 23:07:38,614 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2024-12-01 23:07:38,633 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:07:38,636 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product27.cil.c that has 28 procedures, 597 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 23:07:38,731 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:07:38,745 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;@47fccd0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:07:38,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 23:07:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 460 states have (on average 1.6717391304347826) internal successors, (769), 478 states have internal predecessors, (769), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-01 23:07:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-01 23:07:38,777 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:38,778 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] [2024-12-01 23:07:38,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:38,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:38,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1327029307, now seen corresponding path program 1 times [2024-12-01 23:07:38,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:38,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459516423] [2024-12-01 23:07:38,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:38,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:39,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459516423] [2024-12-01 23:07:39,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459516423] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:39,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:39,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:07:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097304443] [2024-12-01 23:07:39,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:39,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:07:39,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:39,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:07:39,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:39,634 INFO L87 Difference]: Start difference. First operand has 597 states, 460 states have (on average 1.6717391304347826) internal successors, (769), 478 states have internal predecessors, (769), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) 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) [2024-12-01 23:07:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:39,916 INFO L93 Difference]: Finished difference Result 1191 states and 1982 transitions. [2024-12-01 23:07:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:07:39,919 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 [2024-12-01 23:07:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:39,935 INFO L225 Difference]: With dead ends: 1191 [2024-12-01 23:07:39,935 INFO L226 Difference]: Without dead ends: 602 [2024-12-01 23:07:39,943 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 [2024-12-01 23:07:39,946 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 91 mSDsluCounter, 4750 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5717 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 [2024-12-01 23:07:39,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5717 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:07:39,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-12-01 23:07:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2024-12-01 23:07:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 463 states have (on average 1.6630669546436285) internal successors, (770), 481 states have internal predecessors, (770), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2024-12-01 23:07:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 987 transitions. [2024-12-01 23:07:40,052 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 987 transitions. Word has length 113 [2024-12-01 23:07:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:40,052 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 987 transitions. [2024-12-01 23:07:40,053 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) [2024-12-01 23:07:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 987 transitions. [2024-12-01 23:07:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-01 23:07:40,061 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:40,061 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] [2024-12-01 23:07:40,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 23:07:40,062 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:40,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:40,063 INFO L85 PathProgramCache]: Analyzing trace with hash 912113088, now seen corresponding path program 1 times [2024-12-01 23:07:40,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:40,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906726838] [2024-12-01 23:07:40,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:40,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:40,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:40,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906726838] [2024-12-01 23:07:40,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906726838] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:40,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:40,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:07:40,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601201248] [2024-12-01 23:07:40,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:40,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:07:40,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:40,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:07:40,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:40,484 INFO L87 Difference]: Start difference. First operand 600 states and 987 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) [2024-12-01 23:07:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:40,643 INFO L93 Difference]: Finished difference Result 1195 states and 1977 transitions. [2024-12-01 23:07:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:07:40,644 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 [2024-12-01 23:07:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:40,650 INFO L225 Difference]: With dead ends: 1195 [2024-12-01 23:07:40,650 INFO L226 Difference]: Without dead ends: 611 [2024-12-01 23:07:40,654 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 [2024-12-01 23:07:40,655 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 90 mSDsluCounter, 4744 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5712 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 [2024-12-01 23:07:40,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5712 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:07:40,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-12-01 23:07:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 600. [2024-12-01 23:07:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 463 states have (on average 1.6630669546436285) internal successors, (770), 481 states have internal predecessors, (770), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2024-12-01 23:07:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 987 transitions. [2024-12-01 23:07:40,699 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 987 transitions. Word has length 114 [2024-12-01 23:07:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:40,700 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 987 transitions. [2024-12-01 23:07:40,700 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) [2024-12-01 23:07:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 987 transitions. [2024-12-01 23:07:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-01 23:07:40,705 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:40,705 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] [2024-12-01 23:07:40,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 23:07:40,705 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:40,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:40,706 INFO L85 PathProgramCache]: Analyzing trace with hash -419783698, now seen corresponding path program 1 times [2024-12-01 23:07:40,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:40,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503236526] [2024-12-01 23:07:40,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:40,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:40,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:40,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503236526] [2024-12-01 23:07:40,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503236526] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:40,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:40,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:07:40,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393552286] [2024-12-01 23:07:40,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:40,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:07:40,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:40,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:07:40,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:07:40,904 INFO L87 Difference]: Start difference. First operand 600 states and 987 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) [2024-12-01 23:07:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:40,996 INFO L93 Difference]: Finished difference Result 1182 states and 1955 transitions. [2024-12-01 23:07:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:07:40,997 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 [2024-12-01 23:07:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:41,002 INFO L225 Difference]: With dead ends: 1182 [2024-12-01 23:07:41,002 INFO L226 Difference]: Without dead ends: 570 [2024-12-01 23:07:41,006 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 [2024-12-01 23:07:41,007 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 14 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2866 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 [2024-12-01 23:07:41,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2866 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-12-01 23:07:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-12-01 23:07:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 436 states have (on average 1.646788990825688) internal successors, (718), 452 states have internal predecessors, (718), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 23:07:41,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 931 transitions. [2024-12-01 23:07:41,041 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 931 transitions. Word has length 114 [2024-12-01 23:07:41,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:41,041 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 931 transitions. [2024-12-01 23:07:41,042 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) [2024-12-01 23:07:41,042 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 931 transitions. [2024-12-01 23:07:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-01 23:07:41,046 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:41,046 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] [2024-12-01 23:07:41,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 23:07:41,046 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:41,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1028425217, now seen corresponding path program 1 times [2024-12-01 23:07:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:41,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154880230] [2024-12-01 23:07:41,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:41,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:41,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154880230] [2024-12-01 23:07:41,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154880230] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:41,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:41,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:07:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728656592] [2024-12-01 23:07:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:41,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:07:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:41,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:07:41,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:41,363 INFO L87 Difference]: Start difference. First operand 570 states and 931 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) [2024-12-01 23:07:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:41,475 INFO L93 Difference]: Finished difference Result 1133 states and 1861 transitions. [2024-12-01 23:07:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:07:41,475 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 [2024-12-01 23:07:41,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:41,481 INFO L225 Difference]: With dead ends: 1133 [2024-12-01 23:07:41,481 INFO L226 Difference]: Without dead ends: 564 [2024-12-01 23:07:41,485 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 [2024-12-01 23:07:41,486 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 63 mSDsluCounter, 4547 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5468 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 [2024-12-01 23:07:41,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5468 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-12-01 23:07:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-12-01 23:07:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.6395348837209303) internal successors, (705), 446 states have internal predecessors, (705), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 23:07:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 918 transitions. [2024-12-01 23:07:41,521 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 918 transitions. Word has length 115 [2024-12-01 23:07:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:41,522 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 918 transitions. [2024-12-01 23:07:41,522 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) [2024-12-01 23:07:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 918 transitions. [2024-12-01 23:07:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-01 23:07:41,526 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:41,526 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] [2024-12-01 23:07:41,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 23:07:41,527 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:41,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1276359364, now seen corresponding path program 1 times [2024-12-01 23:07:41,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:41,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801789525] [2024-12-01 23:07:41,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:41,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:41,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801789525] [2024-12-01 23:07:41,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801789525] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:41,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:41,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:07:41,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802348649] [2024-12-01 23:07:41,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:41,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:07:41,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:41,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:07:41,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:41,822 INFO L87 Difference]: Start difference. First operand 564 states and 918 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) [2024-12-01 23:07:41,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:41,936 INFO L93 Difference]: Finished difference Result 1121 states and 1835 transitions. [2024-12-01 23:07:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:07:41,937 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 [2024-12-01 23:07:41,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:41,942 INFO L225 Difference]: With dead ends: 1121 [2024-12-01 23:07:41,942 INFO L226 Difference]: Without dead ends: 558 [2024-12-01 23:07:41,946 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 [2024-12-01 23:07:41,947 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 49 mSDsluCounter, 4499 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5408 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 [2024-12-01 23:07:41,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5408 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-12-01 23:07:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-12-01 23:07:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6320754716981132) internal successors, (692), 440 states have internal predecessors, (692), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 23:07:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 905 transitions. [2024-12-01 23:07:41,978 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 905 transitions. Word has length 116 [2024-12-01 23:07:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:41,978 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 905 transitions. [2024-12-01 23:07:41,979 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) [2024-12-01 23:07:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 905 transitions. [2024-12-01 23:07:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-01 23:07:41,982 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:41,982 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] [2024-12-01 23:07:41,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 23:07:41,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:41,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2024020037, now seen corresponding path program 1 times [2024-12-01 23:07:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061870260] [2024-12-01 23:07:41,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:42,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:42,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061870260] [2024-12-01 23:07:42,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061870260] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:42,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:42,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 23:07:42,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024416273] [2024-12-01 23:07:42,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:42,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:07:42,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:42,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:07:42,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:42,212 INFO L87 Difference]: Start difference. First operand 558 states and 905 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) [2024-12-01 23:07:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:42,312 INFO L93 Difference]: Finished difference Result 1109 states and 1809 transitions. [2024-12-01 23:07:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:07:42,313 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 [2024-12-01 23:07:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:42,319 INFO L225 Difference]: With dead ends: 1109 [2024-12-01 23:07:42,319 INFO L226 Difference]: Without dead ends: 558 [2024-12-01 23:07:42,323 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 [2024-12-01 23:07:42,323 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 24 mSDsluCounter, 4463 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5360 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 [2024-12-01 23:07:42,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5360 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-12-01 23:07:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-12-01 23:07:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6297169811320755) internal successors, (691), 440 states have internal predecessors, (691), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 23:07:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 904 transitions. [2024-12-01 23:07:42,354 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 904 transitions. Word has length 116 [2024-12-01 23:07:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:42,355 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 904 transitions. [2024-12-01 23:07:42,355 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) [2024-12-01 23:07:42,355 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 904 transitions. [2024-12-01 23:07:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-01 23:07:42,358 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:42,358 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] [2024-12-01 23:07:42,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 23:07:42,359 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:42,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2042167235, now seen corresponding path program 1 times [2024-12-01 23:07:42,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:42,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127696065] [2024-12-01 23:07:42,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:42,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:42,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127696065] [2024-12-01 23:07:42,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127696065] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:42,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:42,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:07:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180672953] [2024-12-01 23:07:42,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:42,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:07:42,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:42,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:07:42,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:07:42,519 INFO L87 Difference]: Start difference. First operand 558 states and 904 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) [2024-12-01 23:07:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:42,591 INFO L93 Difference]: Finished difference Result 1100 states and 1794 transitions. [2024-12-01 23:07:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:07:42,592 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 [2024-12-01 23:07:42,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:42,597 INFO L225 Difference]: With dead ends: 1100 [2024-12-01 23:07:42,597 INFO L226 Difference]: Without dead ends: 558 [2024-12-01 23:07:42,601 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 [2024-12-01 23:07:42,602 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 15 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2652 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 [2024-12-01 23:07:42,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2652 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-12-01 23:07:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-12-01 23:07:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6273584905660377) internal successors, (690), 440 states have internal predecessors, (690), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 23:07:42,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 903 transitions. [2024-12-01 23:07:42,632 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 903 transitions. Word has length 117 [2024-12-01 23:07:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:42,633 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 903 transitions. [2024-12-01 23:07:42,633 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) [2024-12-01 23:07:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 903 transitions. [2024-12-01 23:07:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-01 23:07:42,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:42,637 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] [2024-12-01 23:07:42,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 23:07:42,637 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:42,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 228955012, now seen corresponding path program 1 times [2024-12-01 23:07:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:42,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669758922] [2024-12-01 23:07:42,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:42,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:42,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669758922] [2024-12-01 23:07:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669758922] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:42,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:42,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:07:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919171235] [2024-12-01 23:07:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:42,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:07:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:42,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:07:42,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:07:42,790 INFO L87 Difference]: Start difference. First operand 558 states and 903 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) [2024-12-01 23:07:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:42,856 INFO L93 Difference]: Finished difference Result 1100 states and 1792 transitions. [2024-12-01 23:07:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:07:42,857 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 [2024-12-01 23:07:42,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:42,862 INFO L225 Difference]: With dead ends: 1100 [2024-12-01 23:07:42,862 INFO L226 Difference]: Without dead ends: 558 [2024-12-01 23:07:42,866 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 [2024-12-01 23:07:42,867 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 14 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2654 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 [2024-12-01 23:07:42,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2654 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-12-01 23:07:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-12-01 23:07:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.625) internal successors, (689), 440 states have internal predecessors, (689), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 23:07:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 902 transitions. [2024-12-01 23:07:42,898 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 902 transitions. Word has length 118 [2024-12-01 23:07:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:42,898 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 902 transitions. [2024-12-01 23:07:42,898 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) [2024-12-01 23:07:42,898 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 902 transitions. [2024-12-01 23:07:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-01 23:07:42,902 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:42,902 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] [2024-12-01 23:07:42,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 23:07:42,903 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:42,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:42,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1897292952, now seen corresponding path program 1 times [2024-12-01 23:07:42,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:42,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001955870] [2024-12-01 23:07:42,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:42,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:43,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:43,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001955870] [2024-12-01 23:07:43,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001955870] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:43,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:43,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:07:43,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399519029] [2024-12-01 23:07:43,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:43,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:07:43,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:43,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:07:43,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:07:43,055 INFO L87 Difference]: Start difference. First operand 558 states and 902 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) [2024-12-01 23:07:43,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:43,112 INFO L93 Difference]: Finished difference Result 1100 states and 1790 transitions. [2024-12-01 23:07:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:07:43,113 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 [2024-12-01 23:07:43,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:43,118 INFO L225 Difference]: With dead ends: 1100 [2024-12-01 23:07:43,118 INFO L226 Difference]: Without dead ends: 558 [2024-12-01 23:07:43,121 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 [2024-12-01 23:07:43,122 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 13 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2656 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 [2024-12-01 23:07:43,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2656 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-12-01 23:07:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-12-01 23:07:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6226415094339623) internal successors, (688), 440 states have internal predecessors, (688), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 23:07:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 901 transitions. [2024-12-01 23:07:43,157 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 901 transitions. Word has length 119 [2024-12-01 23:07:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:43,158 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 901 transitions. [2024-12-01 23:07:43,158 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) [2024-12-01 23:07:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 901 transitions. [2024-12-01 23:07:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-01 23:07:43,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:43,160 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] [2024-12-01 23:07:43,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 23:07:43,160 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:43,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash -842746999, now seen corresponding path program 1 times [2024-12-01 23:07:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050850801] [2024-12-01 23:07:43,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:43,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:43,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050850801] [2024-12-01 23:07:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050850801] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:43,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:07:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058180513] [2024-12-01 23:07:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:43,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:07:43,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:43,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:07:43,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:07:43,296 INFO L87 Difference]: Start difference. First operand 558 states and 901 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) [2024-12-01 23:07:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:43,343 INFO L93 Difference]: Finished difference Result 1100 states and 1788 transitions. [2024-12-01 23:07:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:07:43,344 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 [2024-12-01 23:07:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:43,348 INFO L225 Difference]: With dead ends: 1100 [2024-12-01 23:07:43,348 INFO L226 Difference]: Without dead ends: 558 [2024-12-01 23:07:43,350 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 [2024-12-01 23:07:43,351 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 12 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2658 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 [2024-12-01 23:07:43,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2658 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-12-01 23:07:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-12-01 23:07:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6202830188679245) internal successors, (687), 440 states have internal predecessors, (687), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 23:07:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 900 transitions. [2024-12-01 23:07:43,370 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 900 transitions. Word has length 120 [2024-12-01 23:07:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:43,370 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 900 transitions. [2024-12-01 23:07:43,370 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) [2024-12-01 23:07:43,370 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 900 transitions. [2024-12-01 23:07:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-01 23:07:43,373 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:43,373 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] [2024-12-01 23:07:43,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 23:07:43,373 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:43,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash 32162573, now seen corresponding path program 1 times [2024-12-01 23:07:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:43,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781917229] [2024-12-01 23:07:43,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:43,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:07:43,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:43,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781917229] [2024-12-01 23:07:43,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781917229] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:43,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095947914] [2024-12-01 23:07:43,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:43,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:43,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:43,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:43,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 23:07:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:44,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-01 23:07:44,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:07:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 23:07:44,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:07:44,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095947914] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:44,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:07:44,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-01 23:07:44,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437570238] [2024-12-01 23:07:44,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:44,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:07:44,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:44,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:07:44,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:44,174 INFO L87 Difference]: Start difference. First operand 558 states and 900 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) [2024-12-01 23:07:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:44,245 INFO L93 Difference]: Finished difference Result 1585 states and 2588 transitions. [2024-12-01 23:07:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:07:44,246 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 [2024-12-01 23:07:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:44,254 INFO L225 Difference]: With dead ends: 1585 [2024-12-01 23:07:44,254 INFO L226 Difference]: Without dead ends: 1045 [2024-12-01 23:07:44,257 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 [2024-12-01 23:07:44,257 INFO L435 NwaCegarLoop]: 1604 mSDtfsCounter, 823 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 2400 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 [2024-12-01 23:07:44,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 2400 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-12-01 23:07:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1030. [2024-12-01 23:07:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 790 states have (on average 1.6329113924050633) internal successors, (1290), 821 states have internal predecessors, (1290), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 185 states have call predecessors, (193), 188 states have call successors, (193) [2024-12-01 23:07:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1674 transitions. [2024-12-01 23:07:44,324 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1674 transitions. Word has length 121 [2024-12-01 23:07:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:44,324 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1674 transitions. [2024-12-01 23:07:44,325 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) [2024-12-01 23:07:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1674 transitions. [2024-12-01 23:07:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-01 23:07:44,331 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:44,331 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] [2024-12-01 23:07:44,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 23:07:44,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:44,532 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:44,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1295901243, now seen corresponding path program 1 times [2024-12-01 23:07:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:44,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556115723] [2024-12-01 23:07:44,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:44,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:07:44,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556115723] [2024-12-01 23:07:44,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556115723] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435780070] [2024-12-01 23:07:44,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:44,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:44,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:44,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:44,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 23:07:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:45,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-01 23:07:45,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:07:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 23:07:45,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:07:45,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435780070] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:45,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:07:45,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-01 23:07:45,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714878458] [2024-12-01 23:07:45,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:45,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:07:45,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:45,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:07:45,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:45,342 INFO L87 Difference]: Start difference. First operand 1030 states and 1674 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) [2024-12-01 23:07:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:45,452 INFO L93 Difference]: Finished difference Result 2529 states and 4138 transitions. [2024-12-01 23:07:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:07:45,452 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 [2024-12-01 23:07:45,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:45,466 INFO L225 Difference]: With dead ends: 2529 [2024-12-01 23:07:45,466 INFO L226 Difference]: Without dead ends: 1517 [2024-12-01 23:07:45,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:45,475 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 824 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1695 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 [2024-12-01 23:07:45,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1695 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-12-01 23:07:45,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1469. [2024-12-01 23:07:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1129 states have (on average 1.6448184233835252) internal successors, (1857), 1175 states have internal predecessors, (1857), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 264 states have call predecessors, (278), 268 states have call successors, (278) [2024-12-01 23:07:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2406 transitions. [2024-12-01 23:07:45,562 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2406 transitions. Word has length 122 [2024-12-01 23:07:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:45,563 INFO L471 AbstractCegarLoop]: Abstraction has 1469 states and 2406 transitions. [2024-12-01 23:07:45,563 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) [2024-12-01 23:07:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2406 transitions. [2024-12-01 23:07:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-01 23:07:45,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:45,570 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] [2024-12-01 23:07:45,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-01 23:07:45,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:45,771 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:45,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1459809959, now seen corresponding path program 1 times [2024-12-01 23:07:45,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:45,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485705588] [2024-12-01 23:07:45,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:45,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:46,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:46,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485705588] [2024-12-01 23:07:46,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485705588] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:46,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:46,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 23:07:46,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655238049] [2024-12-01 23:07:46,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:46,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:07:46,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:46,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:07:46,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:07:46,071 INFO L87 Difference]: Start difference. First operand 1469 states and 2406 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) [2024-12-01 23:07:46,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:46,766 INFO L93 Difference]: Finished difference Result 4343 states and 7237 transitions. [2024-12-01 23:07:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:07:46,767 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 [2024-12-01 23:07:46,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:46,794 INFO L225 Difference]: With dead ends: 4343 [2024-12-01 23:07:46,795 INFO L226 Difference]: Without dead ends: 2892 [2024-12-01 23:07:46,807 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 [2024-12-01 23:07:46,808 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 894 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:46,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 4621 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 23:07:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2024-12-01 23:07:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2845. [2024-12-01 23:07:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2191 states have (on average 1.6481058877225012) internal successors, (3611), 2279 states have internal predecessors, (3611), 521 states have call successors, (521), 130 states have call predecessors, (521), 132 states have return successors, (615), 513 states have call predecessors, (615), 517 states have call successors, (615) [2024-12-01 23:07:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4747 transitions. [2024-12-01 23:07:47,028 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4747 transitions. Word has length 124 [2024-12-01 23:07:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:47,028 INFO L471 AbstractCegarLoop]: Abstraction has 2845 states and 4747 transitions. [2024-12-01 23:07:47,028 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) [2024-12-01 23:07:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4747 transitions. [2024-12-01 23:07:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-01 23:07:47,036 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:47,036 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] [2024-12-01 23:07:47,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 23:07:47,036 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:47,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:47,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1438095947, now seen corresponding path program 1 times [2024-12-01 23:07:47,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:47,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167824920] [2024-12-01 23:07:47,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:47,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:07:47,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:47,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167824920] [2024-12-01 23:07:47,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167824920] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:47,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260860565] [2024-12-01 23:07:47,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:47,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:47,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:47,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:47,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 23:07:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:47,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-01 23:07:47,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:07:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:07:47,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:07:47,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260860565] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:47,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:07:47,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-01 23:07:47,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587043529] [2024-12-01 23:07:47,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:47,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:07:47,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:47,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:07:47,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:47,736 INFO L87 Difference]: Start difference. First operand 2845 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 23:07:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:47,928 INFO L93 Difference]: Finished difference Result 5702 states and 9579 transitions. [2024-12-01 23:07:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:07:47,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2024-12-01 23:07:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:47,957 INFO L225 Difference]: With dead ends: 5702 [2024-12-01 23:07:47,957 INFO L226 Difference]: Without dead ends: 2875 [2024-12-01 23:07:47,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:47,980 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 17 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:47,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1778 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2024-12-01 23:07:48,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2873. [2024-12-01 23:07:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2215 states have (on average 1.6428893905191873) internal successors, (3639), 2303 states have internal predecessors, (3639), 525 states have call successors, (525), 130 states have call predecessors, (525), 132 states have return successors, (621), 517 states have call predecessors, (621), 521 states have call successors, (621) [2024-12-01 23:07:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4785 transitions. [2024-12-01 23:07:48,172 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4785 transitions. Word has length 125 [2024-12-01 23:07:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:48,172 INFO L471 AbstractCegarLoop]: Abstraction has 2873 states and 4785 transitions. [2024-12-01 23:07:48,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 23:07:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4785 transitions. [2024-12-01 23:07:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-01 23:07:48,180 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:48,180 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] [2024-12-01 23:07:48,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-01 23:07:48,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-01 23:07:48,381 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:48,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1228132519, now seen corresponding path program 1 times [2024-12-01 23:07:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:48,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399493518] [2024-12-01 23:07:48,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:48,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:07:48,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:48,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399493518] [2024-12-01 23:07:48,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399493518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:48,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:48,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:07:48,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112126007] [2024-12-01 23:07:48,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:48,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:07:48,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:48,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:07:48,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:07:48,504 INFO L87 Difference]: Start difference. First operand 2873 states and 4785 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 23:07:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:48,711 INFO L93 Difference]: Finished difference Result 5742 states and 9638 transitions. [2024-12-01 23:07:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:07:48,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2024-12-01 23:07:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:48,740 INFO L225 Difference]: With dead ends: 5742 [2024-12-01 23:07:48,740 INFO L226 Difference]: Without dead ends: 2887 [2024-12-01 23:07:48,780 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 [2024-12-01 23:07:48,781 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 12 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:48,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2624 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:07:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2024-12-01 23:07:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2877. [2024-12-01 23:07:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2218 states have (on average 1.6415689810640217) internal successors, (3641), 2306 states have internal predecessors, (3641), 525 states have call successors, (525), 132 states have call predecessors, (525), 133 states have return successors, (610), 516 states have call predecessors, (610), 521 states have call successors, (610) [2024-12-01 23:07:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4776 transitions. [2024-12-01 23:07:49,002 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4776 transitions. Word has length 125 [2024-12-01 23:07:49,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:49,003 INFO L471 AbstractCegarLoop]: Abstraction has 2877 states and 4776 transitions. [2024-12-01 23:07:49,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 23:07:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4776 transitions. [2024-12-01 23:07:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-01 23:07:49,011 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:49,011 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] [2024-12-01 23:07:49,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-01 23:07:49,012 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:49,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash -773097843, now seen corresponding path program 1 times [2024-12-01 23:07:49,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:49,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976303411] [2024-12-01 23:07:49,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:49,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:07:49,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:49,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976303411] [2024-12-01 23:07:49,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976303411] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:49,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088215994] [2024-12-01 23:07:49,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:49,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:49,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:49,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:49,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 23:07:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:49,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:07:49,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:07:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 23:07:49,820 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:07:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088215994] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:07:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-01 23:07:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522524773] [2024-12-01 23:07:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:49,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:07:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:49,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:07:49,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:49,822 INFO L87 Difference]: Start difference. First operand 2877 states and 4776 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) [2024-12-01 23:07:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:50,110 INFO L93 Difference]: Finished difference Result 8341 states and 14033 transitions. [2024-12-01 23:07:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:07:50,110 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 [2024-12-01 23:07:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:50,143 INFO L225 Difference]: With dead ends: 8341 [2024-12-01 23:07:50,143 INFO L226 Difference]: Without dead ends: 5483 [2024-12-01 23:07:50,157 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 [2024-12-01 23:07:50,157 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 735 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1674 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 [2024-12-01 23:07:50,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1674 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:07:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2024-12-01 23:07:50,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 5446. [2024-12-01 23:07:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5446 states, 4186 states have (on average 1.6101290014333494) internal successors, (6740), 4360 states have internal predecessors, (6740), 998 states have call successors, (998), 258 states have call predecessors, (998), 261 states have return successors, (1265), 983 states have call predecessors, (1265), 992 states have call successors, (1265) [2024-12-01 23:07:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5446 states to 5446 states and 9003 transitions. [2024-12-01 23:07:50,511 INFO L78 Accepts]: Start accepts. Automaton has 5446 states and 9003 transitions. Word has length 125 [2024-12-01 23:07:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:50,512 INFO L471 AbstractCegarLoop]: Abstraction has 5446 states and 9003 transitions. [2024-12-01 23:07:50,512 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) [2024-12-01 23:07:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5446 states and 9003 transitions. [2024-12-01 23:07:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-01 23:07:50,519 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:50,519 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] [2024-12-01 23:07:50,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 23:07:50,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-01 23:07:50,720 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:50,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:50,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1380886767, now seen corresponding path program 1 times [2024-12-01 23:07:50,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:50,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874119212] [2024-12-01 23:07:50,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:50,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 23:07:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:50,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874119212] [2024-12-01 23:07:50,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874119212] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:50,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065090855] [2024-12-01 23:07:50,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:50,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:50,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:50,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:50,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 23:07:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:51,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:07:51,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:07:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-01 23:07:51,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:07:51,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065090855] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:51,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:07:51,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-01 23:07:51,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559384837] [2024-12-01 23:07:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:51,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:07:51,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:51,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:07:51,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:07:51,386 INFO L87 Difference]: Start difference. First operand 5446 states and 9003 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) [2024-12-01 23:07:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:51,849 INFO L93 Difference]: Finished difference Result 16224 states and 27142 transitions. [2024-12-01 23:07:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:07:51,850 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 [2024-12-01 23:07:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:51,955 INFO L225 Difference]: With dead ends: 16224 [2024-12-01 23:07:51,956 INFO L226 Difference]: Without dead ends: 10799 [2024-12-01 23:07:51,991 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 [2024-12-01 23:07:51,991 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 885 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:51,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 1833 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:07:52,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2024-12-01 23:07:52,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 10696. [2024-12-01 23:07:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10696 states, 8248 states have (on average 1.6133608147429679) internal successors, (13307), 8576 states have internal predecessors, (13307), 1936 states have call successors, (1936), 498 states have call predecessors, (1936), 511 states have return successors, (2524), 1927 states have call predecessors, (2524), 1926 states have call successors, (2524) [2024-12-01 23:07:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10696 states to 10696 states and 17767 transitions. [2024-12-01 23:07:52,635 INFO L78 Accepts]: Start accepts. Automaton has 10696 states and 17767 transitions. Word has length 127 [2024-12-01 23:07:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:52,635 INFO L471 AbstractCegarLoop]: Abstraction has 10696 states and 17767 transitions. [2024-12-01 23:07:52,636 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) [2024-12-01 23:07:52,636 INFO L276 IsEmpty]: Start isEmpty. Operand 10696 states and 17767 transitions. [2024-12-01 23:07:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-01 23:07:52,641 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:52,641 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] [2024-12-01 23:07:52,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 23:07:52,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-01 23:07:52,842 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:52,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:52,842 INFO L85 PathProgramCache]: Analyzing trace with hash 369769517, now seen corresponding path program 1 times [2024-12-01 23:07:52,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:52,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718715112] [2024-12-01 23:07:52,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:52,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 23:07:52,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718715112] [2024-12-01 23:07:52,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718715112] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097947989] [2024-12-01 23:07:52,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:52,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:52,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:52,969 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:52,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 23:07:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:53,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 23:07:53,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:07:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 23:07:53,400 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:07:53,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097947989] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:53,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:07:53,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-01 23:07:53,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821545516] [2024-12-01 23:07:53,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:53,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:07:53,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:53,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:07:53,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:07:53,402 INFO L87 Difference]: Start difference. First operand 10696 states and 17767 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) [2024-12-01 23:07:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:54,281 INFO L93 Difference]: Finished difference Result 20157 states and 33574 transitions. [2024-12-01 23:07:54,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:07:54,282 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 [2024-12-01 23:07:54,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:54,326 INFO L225 Difference]: With dead ends: 20157 [2024-12-01 23:07:54,326 INFO L226 Difference]: Without dead ends: 9479 [2024-12-01 23:07:54,367 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 [2024-12-01 23:07:54,367 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 759 mSDsluCounter, 3201 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 4142 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:54,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 4142 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-01 23:07:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9479 states. [2024-12-01 23:07:54,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9479 to 9457. [2024-12-01 23:07:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9457 states, 7305 states have (on average 1.6026009582477756) internal successors, (11707), 7580 states have internal predecessors, (11707), 1686 states have call successors, (1686), 454 states have call predecessors, (1686), 465 states have return successors, (2180), 1678 states have call predecessors, (2180), 1676 states have call successors, (2180) [2024-12-01 23:07:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9457 states to 9457 states and 15573 transitions. [2024-12-01 23:07:54,643 INFO L78 Accepts]: Start accepts. Automaton has 9457 states and 15573 transitions. Word has length 127 [2024-12-01 23:07:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:54,644 INFO L471 AbstractCegarLoop]: Abstraction has 9457 states and 15573 transitions. [2024-12-01 23:07:54,644 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) [2024-12-01 23:07:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 9457 states and 15573 transitions. [2024-12-01 23:07:54,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-01 23:07:54,647 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:54,647 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] [2024-12-01 23:07:54,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-01 23:07:54,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-01 23:07:54,847 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:54,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash 381396385, now seen corresponding path program 1 times [2024-12-01 23:07:54,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:54,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024367412] [2024-12-01 23:07:54,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:54,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-01 23:07:55,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:55,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024367412] [2024-12-01 23:07:55,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024367412] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:55,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:55,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 23:07:55,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157120948] [2024-12-01 23:07:55,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:55,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:07:55,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:55,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:07:55,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:07:55,056 INFO L87 Difference]: Start difference. First operand 9457 states and 15573 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) [2024-12-01 23:07:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:56,119 INFO L93 Difference]: Finished difference Result 28317 states and 47901 transitions. [2024-12-01 23:07:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:07:56,120 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 [2024-12-01 23:07:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:56,187 INFO L225 Difference]: With dead ends: 28317 [2024-12-01 23:07:56,187 INFO L226 Difference]: Without dead ends: 18878 [2024-12-01 23:07:56,219 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 [2024-12-01 23:07:56,220 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 887 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:07:56,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 4612 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:07:56,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18878 states. [2024-12-01 23:07:56,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18878 to 18777. [2024-12-01 23:07:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18777 states, 14516 states have (on average 1.5992008817856158) internal successors, (23214), 15057 states have internal predecessors, (23214), 3327 states have call successors, (3327), 902 states have call predecessors, (3327), 933 states have return successors, (5037), 3329 states have call predecessors, (5037), 3309 states have call successors, (5037) [2024-12-01 23:07:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18777 states to 18777 states and 31578 transitions. [2024-12-01 23:07:56,988 INFO L78 Accepts]: Start accepts. Automaton has 18777 states and 31578 transitions. Word has length 135 [2024-12-01 23:07:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:56,988 INFO L471 AbstractCegarLoop]: Abstraction has 18777 states and 31578 transitions. [2024-12-01 23:07:56,988 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) [2024-12-01 23:07:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 18777 states and 31578 transitions. [2024-12-01 23:07:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-01 23:07:56,991 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:56,991 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] [2024-12-01 23:07:56,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-01 23:07:56,991 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:56,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1541303015, now seen corresponding path program 1 times [2024-12-01 23:07:56,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:56,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814410595] [2024-12-01 23:07:56,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:56,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-01 23:07:57,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:57,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814410595] [2024-12-01 23:07:57,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814410595] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:57,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:07:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615383548] [2024-12-01 23:07:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:57,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:07:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:57,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:07:57,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:07:57,063 INFO L87 Difference]: Start difference. First operand 18777 states and 31578 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) [2024-12-01 23:07:57,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:07:57,835 INFO L93 Difference]: Finished difference Result 37680 states and 64395 transitions. [2024-12-01 23:07:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:07:57,836 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 [2024-12-01 23:07:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:07:57,923 INFO L225 Difference]: With dead ends: 37680 [2024-12-01 23:07:57,923 INFO L226 Difference]: Without dead ends: 18921 [2024-12-01 23:07:58,088 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 [2024-12-01 23:07:58,088 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 12 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2618 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 [2024-12-01 23:07:58,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2618 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:07:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18921 states. [2024-12-01 23:07:58,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18921 to 18857. [2024-12-01 23:07:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18857 states, 14588 states have (on average 1.5967918837400603) internal successors, (23294), 15113 states have internal predecessors, (23294), 3327 states have call successors, (3327), 934 states have call predecessors, (3327), 941 states have return successors, (4989), 3321 states have call predecessors, (4989), 3309 states have call successors, (4989) [2024-12-01 23:07:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18857 states to 18857 states and 31610 transitions. [2024-12-01 23:07:58,901 INFO L78 Accepts]: Start accepts. Automaton has 18857 states and 31610 transitions. Word has length 136 [2024-12-01 23:07:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:07:58,902 INFO L471 AbstractCegarLoop]: Abstraction has 18857 states and 31610 transitions. [2024-12-01 23:07:58,902 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) [2024-12-01 23:07:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 18857 states and 31610 transitions. [2024-12-01 23:07:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-01 23:07:58,906 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:07:58,906 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] [2024-12-01 23:07:58,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-01 23:07:58,907 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:07:58,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:07:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1088355721, now seen corresponding path program 1 times [2024-12-01 23:07:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:07:58,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853159416] [2024-12-01 23:07:58,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:58,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-01 23:07:59,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:59,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853159416] [2024-12-01 23:07:59,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853159416] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:07:59,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:07:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 23:07:59,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384179877] [2024-12-01 23:07:59,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:07:59,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:07:59,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:07:59,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:07:59,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:07:59,142 INFO L87 Difference]: Start difference. First operand 18857 states and 31610 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) [2024-12-01 23:08:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:00,771 INFO L93 Difference]: Finished difference Result 56657 states and 98697 transitions. [2024-12-01 23:08:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:08:00,772 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 [2024-12-01 23:08:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:01,089 INFO L225 Difference]: With dead ends: 56657 [2024-12-01 23:08:01,089 INFO L226 Difference]: Without dead ends: 37818 [2024-12-01 23:08:01,247 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 [2024-12-01 23:08:01,248 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 885 mSDsluCounter, 3503 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 4462 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:01,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 4462 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:08:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37818 states. [2024-12-01 23:08:02,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37818 to 37653. [2024-12-01 23:08:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37653 states, 29139 states have (on average 1.593431483578709) internal successors, (46431), 30180 states have internal predecessors, (46431), 6620 states have call successors, (6620), 1862 states have call predecessors, (6620), 1893 states have return successors, (12038), 6634 states have call predecessors, (12038), 6586 states have call successors, (12038) [2024-12-01 23:08:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37653 states to 37653 states and 65089 transitions. [2024-12-01 23:08:03,019 INFO L78 Accepts]: Start accepts. Automaton has 37653 states and 65089 transitions. Word has length 145 [2024-12-01 23:08:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:03,019 INFO L471 AbstractCegarLoop]: Abstraction has 37653 states and 65089 transitions. [2024-12-01 23:08:03,019 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) [2024-12-01 23:08:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 37653 states and 65089 transitions. [2024-12-01 23:08:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-01 23:08:03,023 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:03,024 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] [2024-12-01 23:08:03,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-01 23:08:03,024 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:03,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1341017419, now seen corresponding path program 1 times [2024-12-01 23:08:03,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:03,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837100197] [2024-12-01 23:08:03,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:03,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-01 23:08:03,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:03,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837100197] [2024-12-01 23:08:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837100197] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:03,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:03,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:08:03,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294291227] [2024-12-01 23:08:03,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:03,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:08:03,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:03,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:08:03,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:08:03,124 INFO L87 Difference]: Start difference. First operand 37653 states and 65089 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) [2024-12-01 23:08:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:05,276 INFO L93 Difference]: Finished difference Result 75576 states and 134009 transitions. [2024-12-01 23:08:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:08:05,277 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 [2024-12-01 23:08:05,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:05,519 INFO L225 Difference]: With dead ends: 75576 [2024-12-01 23:08:05,519 INFO L226 Difference]: Without dead ends: 37941 [2024-12-01 23:08:05,919 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 [2024-12-01 23:08:05,921 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 11 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2618 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 [2024-12-01 23:08:05,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2618 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:08:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37941 states. [2024-12-01 23:08:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37941 to 37813. [2024-12-01 23:08:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37813 states, 29283 states have (on average 1.5910596591879247) internal successors, (46591), 30324 states have internal predecessors, (46591), 6620 states have call successors, (6620), 1894 states have call predecessors, (6620), 1909 states have return successors, (11966), 6618 states have call predecessors, (11966), 6586 states have call successors, (11966) [2024-12-01 23:08:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37813 states to 37813 states and 65177 transitions. [2024-12-01 23:08:07,435 INFO L78 Accepts]: Start accepts. Automaton has 37813 states and 65177 transitions. Word has length 146 [2024-12-01 23:08:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:07,435 INFO L471 AbstractCegarLoop]: Abstraction has 37813 states and 65177 transitions. [2024-12-01 23:08:07,435 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) [2024-12-01 23:08:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 37813 states and 65177 transitions. [2024-12-01 23:08:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-01 23:08:07,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:07,439 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] [2024-12-01 23:08:07,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-01 23:08:07,439 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:07,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash -365290429, now seen corresponding path program 1 times [2024-12-01 23:08:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207494586] [2024-12-01 23:08:07,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-01 23:08:07,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207494586] [2024-12-01 23:08:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207494586] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:07,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:07,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 23:08:07,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370596432] [2024-12-01 23:08:07,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:07,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:08:07,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:07,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:08:07,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:08:07,591 INFO L87 Difference]: Start difference. First operand 37813 states and 65177 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) [2024-12-01 23:08:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:10,769 INFO L93 Difference]: Finished difference Result 113761 states and 208091 transitions. [2024-12-01 23:08:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:08:10,770 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 [2024-12-01 23:08:10,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:11,220 INFO L225 Difference]: With dead ends: 113761 [2024-12-01 23:08:11,220 INFO L226 Difference]: Without dead ends: 75966 [2024-12-01 23:08:11,542 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 [2024-12-01 23:08:11,543 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 880 mSDsluCounter, 3488 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 4439 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 [2024-12-01 23:08:11,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 4439 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:08:11,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75966 states. [2024-12-01 23:08:14,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75966 to 75673. [2024-12-01 23:08:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75673 states, 58610 states have (on average 1.588534379798669) internal successors, (93104), 60683 states have internal predecessors, (93104), 13217 states have call successors, (13217), 3782 states have call predecessors, (13217), 3845 states have return successors, (30615), 13255 states have call predecessors, (30615), 13151 states have call successors, (30615) [2024-12-01 23:08:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75673 states to 75673 states and 136936 transitions. [2024-12-01 23:08:15,552 INFO L78 Accepts]: Start accepts. Automaton has 75673 states and 136936 transitions. Word has length 156 [2024-12-01 23:08:15,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:15,552 INFO L471 AbstractCegarLoop]: Abstraction has 75673 states and 136936 transitions. [2024-12-01 23:08:15,552 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) [2024-12-01 23:08:15,552 INFO L276 IsEmpty]: Start isEmpty. Operand 75673 states and 136936 transitions. [2024-12-01 23:08:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-01 23:08:15,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:15,558 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] [2024-12-01 23:08:15,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-01 23:08:15,558 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:15,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:15,558 INFO L85 PathProgramCache]: Analyzing trace with hash -813766841, now seen corresponding path program 1 times [2024-12-01 23:08:15,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:15,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682914826] [2024-12-01 23:08:15,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:15,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-01 23:08:15,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:15,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682914826] [2024-12-01 23:08:15,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682914826] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:15,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:15,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:08:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546185385] [2024-12-01 23:08:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:15,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:08:15,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:15,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:08:15,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:08:15,692 INFO L87 Difference]: Start difference. First operand 75673 states and 136936 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) [2024-12-01 23:08:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:20,396 INFO L93 Difference]: Finished difference Result 151968 states and 286591 transitions. [2024-12-01 23:08:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:08:20,397 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 [2024-12-01 23:08:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:20,874 INFO L225 Difference]: With dead ends: 151968 [2024-12-01 23:08:20,874 INFO L226 Difference]: Without dead ends: 76313 [2024-12-01 23:08:22,248 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 [2024-12-01 23:08:22,248 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 10 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2618 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 [2024-12-01 23:08:22,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2618 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:08:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76313 states. [2024-12-01 23:08:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76313 to 76057. [2024-12-01 23:08:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76057 states, 58962 states have (on average 1.5855635833248534) internal successors, (93488), 61035 states have internal predecessors, (93488), 13217 states have call successors, (13217), 3846 states have call predecessors, (13217), 3877 states have return successors, (30535), 13223 states have call predecessors, (30535), 13151 states have call successors, (30535) [2024-12-01 23:08:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76057 states to 76057 states and 137240 transitions. [2024-12-01 23:08:26,177 INFO L78 Accepts]: Start accepts. Automaton has 76057 states and 137240 transitions. Word has length 157 [2024-12-01 23:08:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:26,177 INFO L471 AbstractCegarLoop]: Abstraction has 76057 states and 137240 transitions. [2024-12-01 23:08:26,177 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) [2024-12-01 23:08:26,177 INFO L276 IsEmpty]: Start isEmpty. Operand 76057 states and 137240 transitions. [2024-12-01 23:08:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-01 23:08:26,182 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:26,182 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] [2024-12-01 23:08:26,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-01 23:08:26,182 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:26,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash -804290935, now seen corresponding path program 1 times [2024-12-01 23:08:26,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:26,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274153646] [2024-12-01 23:08:26,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:26,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-01 23:08:26,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:26,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274153646] [2024-12-01 23:08:26,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274153646] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:08:26,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447443476] [2024-12-01 23:08:26,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:26,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:08:26,325 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:08:26,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 23:08:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:26,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 23:08:26,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:08:26,706 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 23:08:26,706 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:08:26,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447443476] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:26,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:08:26,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-01 23:08:26,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060166245] [2024-12-01 23:08:26,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:26,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:08:26,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:26,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:08:26,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:08:26,708 INFO L87 Difference]: Start difference. First operand 76057 states and 137240 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) [2024-12-01 23:08:32,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:32,489 INFO L93 Difference]: Finished difference Result 185761 states and 349389 transitions. [2024-12-01 23:08:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:08:32,490 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 [2024-12-01 23:08:32,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:33,277 INFO L225 Difference]: With dead ends: 185761 [2024-12-01 23:08:33,277 INFO L226 Difference]: Without dead ends: 109674 [2024-12-01 23:08:34,503 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 [2024-12-01 23:08:34,504 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 879 mSDsluCounter, 3208 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 4095 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:34,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 4095 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-01 23:08:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109674 states. [2024-12-01 23:08:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109674 to 109486. [2024-12-01 23:08:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109486 states, 85007 states have (on average 1.5691413648287789) internal successors, (133388), 87796 states have internal predecessors, (133388), 18669 states have call successors, (18669), 5810 states have call predecessors, (18669), 5809 states have return successors, (44901), 18549 states have call predecessors, (44901), 18587 states have call successors, (44901) [2024-12-01 23:08:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109486 states to 109486 states and 196958 transitions. [2024-12-01 23:08:40,417 INFO L78 Accepts]: Start accepts. Automaton has 109486 states and 196958 transitions. Word has length 168 [2024-12-01 23:08:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:40,418 INFO L471 AbstractCegarLoop]: Abstraction has 109486 states and 196958 transitions. [2024-12-01 23:08:40,418 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) [2024-12-01 23:08:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 109486 states and 196958 transitions. [2024-12-01 23:08:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-12-01 23:08:40,427 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:40,427 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] [2024-12-01 23:08:40,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-01 23:08:40,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:40,627 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:40,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:40,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1713670967, now seen corresponding path program 1 times [2024-12-01 23:08:40,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:40,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409706026] [2024-12-01 23:08:40,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:40,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-01 23:08:40,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:40,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409706026] [2024-12-01 23:08:40,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409706026] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:08:40,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608258792] [2024-12-01 23:08:40,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:40,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:40,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:08:40,972 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:08:40,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 23:08:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:41,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 2066 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-01 23:08:41,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:08:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-01 23:08:41,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:08:41,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608258792] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:41,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:08:41,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-01 23:08:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249437098] [2024-12-01 23:08:41,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:41,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:08:41,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:41,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:08:41,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-01 23:08:41,405 INFO L87 Difference]: Start difference. First operand 109486 states and 196958 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) [2024-12-01 23:08:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:55,434 INFO L93 Difference]: Finished difference Result 297947 states and 596016 transitions. [2024-12-01 23:08:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-01 23:08:55,435 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 [2024-12-01 23:08:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:57,164 INFO L225 Difference]: With dead ends: 297947 [2024-12-01 23:08:57,164 INFO L226 Difference]: Without dead ends: 182639 [2024-12-01 23:08:58,436 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 [2024-12-01 23:08:58,436 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 2431 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 4858 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 5699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 4858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:58,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2532 Valid, 2308 Invalid, 5699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 4858 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-01 23:08:58,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182639 states. [2024-12-01 23:09:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182639 to 164567. [2024-12-01 23:09:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164567 states, 127623 states have (on average 1.5620460261865023) internal successors, (199353), 131821 states have internal predecessors, (199353), 28080 states have call successors, (28080), 8432 states have call predecessors, (28080), 8863 states have return successors, (79273), 27990 states have call predecessors, (79273), 27966 states have call successors, (79273) [2024-12-01 23:09:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164567 states to 164567 states and 306706 transitions. [2024-12-01 23:09:08,414 INFO L78 Accepts]: Start accepts. Automaton has 164567 states and 306706 transitions. Word has length 201 [2024-12-01 23:09:08,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:08,414 INFO L471 AbstractCegarLoop]: Abstraction has 164567 states and 306706 transitions. [2024-12-01 23:09:08,415 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) [2024-12-01 23:09:08,415 INFO L276 IsEmpty]: Start isEmpty. Operand 164567 states and 306706 transitions. [2024-12-01 23:09:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-12-01 23:09:08,424 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:08,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:08,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-01 23:09:08,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:08,625 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:08,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:08,625 INFO L85 PathProgramCache]: Analyzing trace with hash 24114487, now seen corresponding path program 1 times [2024-12-01 23:09:08,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:08,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541132777] [2024-12-01 23:09:08,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:08,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-01 23:09:08,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541132777] [2024-12-01 23:09:08,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541132777] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930337166] [2024-12-01 23:09:08,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:08,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:08,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:08,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 23:09:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:09,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 2175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:09:09,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-12-01 23:09:09,316 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:09:09,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930337166] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:09,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:09:09,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-01 23:09:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665404206] [2024-12-01 23:09:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:09,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:09,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:09,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-01 23:09:09,317 INFO L87 Difference]: Start difference. First operand 164567 states and 306706 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, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:09:21,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:21,883 INFO L93 Difference]: Finished difference Result 333724 states and 669717 transitions. [2024-12-01 23:09:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:09:21,884 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, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 240 [2024-12-01 23:09:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:23,388 INFO L225 Difference]: With dead ends: 333724 [2024-12-01 23:09:23,388 INFO L226 Difference]: Without dead ends: 169175 [2024-12-01 23:09:26,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-01 23:09:26,028 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 816 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:26,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 2226 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:09:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169175 states. [2024-12-01 23:09:32,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169175 to 169175. [2024-12-01 23:09:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169175 states, 131655 states have (on average 1.5667084425202233) internal successors, (206265), 135853 states have internal predecessors, (206265), 28080 states have call successors, (28080), 9008 states have call predecessors, (28080), 9439 states have return successors, (79574), 27990 states have call predecessors, (79574), 27966 states have call successors, (79574) [2024-12-01 23:09:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169175 states to 169175 states and 313919 transitions. [2024-12-01 23:09:35,405 INFO L78 Accepts]: Start accepts. Automaton has 169175 states and 313919 transitions. Word has length 240 [2024-12-01 23:09:35,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:35,405 INFO L471 AbstractCegarLoop]: Abstraction has 169175 states and 313919 transitions. [2024-12-01 23:09:35,405 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, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:09:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 169175 states and 313919 transitions. [2024-12-01 23:09:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-12-01 23:09:35,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:35,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:35,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-01 23:09:35,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-01 23:09:35,616 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:35,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:35,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2124421847, now seen corresponding path program 1 times [2024-12-01 23:09:35,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:35,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819913437] [2024-12-01 23:09:35,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:35,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-12-01 23:09:35,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:35,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819913437] [2024-12-01 23:09:35,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819913437] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:35,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176600151] [2024-12-01 23:09:35,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:35,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:35,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:35,884 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:35,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 23:09:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:36,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:09:36,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-12-01 23:09:36,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:09:36,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176600151] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:36,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:09:36,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-01 23:09:36,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578465865] [2024-12-01 23:09:36,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:36,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:36,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:36,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:36,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-01 23:09:36,334 INFO L87 Difference]: Start difference. First operand 169175 states and 313919 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, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:09:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:48,440 INFO L93 Difference]: Finished difference Result 342940 states and 683263 transitions. [2024-12-01 23:09:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:09:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 244 [2024-12-01 23:09:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:50,033 INFO L225 Difference]: With dead ends: 342940 [2024-12-01 23:09:50,034 INFO L226 Difference]: Without dead ends: 173783 [2024-12-01 23:09:52,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-01 23:09:52,965 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 813 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:52,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 2223 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:09:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173783 states. [2024-12-01 23:09:59,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173783 to 173783. [2024-12-01 23:09:59,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173783 states, 135687 states have (on average 1.5710937672732097) internal successors, (213177), 139885 states have internal predecessors, (213177), 28080 states have call successors, (28080), 9584 states have call predecessors, (28080), 10015 states have return successors, (79875), 27990 states have call predecessors, (79875), 27966 states have call successors, (79875) [2024-12-01 23:10:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173783 states to 173783 states and 321132 transitions. [2024-12-01 23:10:02,312 INFO L78 Accepts]: Start accepts. Automaton has 173783 states and 321132 transitions. Word has length 244 [2024-12-01 23:10:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:02,312 INFO L471 AbstractCegarLoop]: Abstraction has 173783 states and 321132 transitions. [2024-12-01 23:10:02,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:10:02,313 INFO L276 IsEmpty]: Start isEmpty. Operand 173783 states and 321132 transitions. [2024-12-01 23:10:02,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-12-01 23:10:02,323 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:02,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:02,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-01 23:10:02,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-01 23:10:02,524 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:10:02,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:02,524 INFO L85 PathProgramCache]: Analyzing trace with hash 945378487, now seen corresponding path program 1 times [2024-12-01 23:10:02,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:02,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967815089] [2024-12-01 23:10:02,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:02,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-01 23:10:02,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:02,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967815089] [2024-12-01 23:10:02,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967815089] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:10:02,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781766121] [2024-12-01 23:10:02,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:02,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:10:02,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:10:02,742 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:10:02,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7812e8f7-8127-41f1-af48-adb6de26847f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-01 23:10:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:03,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 2183 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:10:03,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:10:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-12-01 23:10:03,174 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:10:03,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781766121] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:03,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:10:03,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-01 23:10:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196262033] [2024-12-01 23:10:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:03,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:10:03,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:03,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:10:03,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-01 23:10:03,176 INFO L87 Difference]: Start difference. First operand 173783 states and 321132 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)