./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product19.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_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/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_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/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_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/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 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:33:36,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:33:36,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:33:36,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:33:36,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:33:37,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:33:37,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:33:37,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:33:37,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:33:37,016 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:33:37,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:33:37,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:33:37,016 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:33:37,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:33:37,017 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:33:37,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:33:37,017 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:33:37,017 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:33:37,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:33:37,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:33:37,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:33:37,018 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:33:37,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:33:37,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:33:37,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:33:37,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:33:37,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:33:37,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:33:37,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:33:37,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:33:37,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:33:37,019 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:33:37,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:33:37,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:33:37,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:33:37,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:33:37,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:33:37,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:33:37,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:33:37,020 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_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/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 -> 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 [2024-12-02 06:33:37,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:33:37,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:33:37,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:33:37,335 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:33:37,336 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:33:37,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2024-12-02 06:33:40,645 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/data/ccb173355/2957fe123fc64d4e996aba3f37dfdc87/FLAG4fcf8d096 [2024-12-02 06:33:40,967 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:33:40,968 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2024-12-02 06:33:40,987 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/data/ccb173355/2957fe123fc64d4e996aba3f37dfdc87/FLAG4fcf8d096 [2024-12-02 06:33:41,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/data/ccb173355/2957fe123fc64d4e996aba3f37dfdc87 [2024-12-02 06:33:41,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:33:41,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:33:41,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:33:41,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:33:41,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:33:41,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d29c91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41, skipping insertion in model container [2024-12-02 06:33:41,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:33:41,402 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_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2024-12-02 06:33:41,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:33:41,582 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:33:41,590 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-12-02 06:33:41,591 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [414] [2024-12-02 06:33:41,591 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [461] [2024-12-02 06:33:41,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [499] [2024-12-02 06:33:41,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [799] [2024-12-02 06:33:41,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [808] [2024-12-02 06:33:41,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1024] [2024-12-02 06:33:41,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1129] [2024-12-02 06:33:41,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1146] [2024-12-02 06:33:41,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2217] [2024-12-02 06:33:41,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2621] [2024-12-02 06:33:41,638 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_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2024-12-02 06:33:41,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:33:41,741 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:33:41,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41 WrapperNode [2024-12-02 06:33:41,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:33:41,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:33:41,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:33:41,743 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:33:41,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,822 INFO L138 Inliner]: procedures = 127, calls = 186, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 958 [2024-12-02 06:33:41,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:33:41,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:33:41,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:33:41,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:33:41,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,870 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-12-02 06:33:41,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,888 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:33:41,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:33:41,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:33:41,917 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:33:41,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (1/1) ... [2024-12-02 06:33:41,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:33:41,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:41,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:33:41,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:33:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-12-02 06:33:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-12-02 06:33:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-12-02 06:33:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-12-02 06:33:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-12-02 06:33:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-12-02 06:33:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-12-02 06:33:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-12-02 06:33:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-12-02 06:33:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-12-02 06:33:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-12-02 06:33:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-12-02 06:33:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-12-02 06:33:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-12-02 06:33:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-12-02 06:33:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-12-02 06:33:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:33:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-12-02 06:33:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-12-02 06:33:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-12-02 06:33:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-12-02 06:33:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-12-02 06:33:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-12-02 06:33:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-12-02 06:33:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-12-02 06:33:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2024-12-02 06:33:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2024-12-02 06:33:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-12-02 06:33:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-12-02 06:33:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-12-02 06:33:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-12-02 06:33:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-12-02 06:33:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-12-02 06:33:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-12-02 06:33:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-12-02 06:33:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:33:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:33:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 06:33:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 06:33:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-12-02 06:33:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-12-02 06:33:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:33:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:33:42,227 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:33:42,230 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:33:43,214 INFO L? ?]: Removed 430 outVars from TransFormulas that were not future-live. [2024-12-02 06:33:43,215 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:33:43,233 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:33:43,234 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:33:43,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:33:43 BoogieIcfgContainer [2024-12-02 06:33:43,234 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:33:43,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:33:43,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:33:43,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:33:43,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:33:41" (1/3) ... [2024-12-02 06:33:43,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3522a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:33:43, skipping insertion in model container [2024-12-02 06:33:43,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:33:41" (2/3) ... [2024-12-02 06:33:43,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3522a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:33:43, skipping insertion in model container [2024-12-02 06:33:43,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:33:43" (3/3) ... [2024-12-02 06:33:43,246 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.c [2024-12-02 06:33:43,260 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:33:43,262 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec27_product19.cil.c that has 19 procedures, 313 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:33:43,328 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:33:43,341 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;@14b339d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:33:43,341 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:33:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 247 states have (on average 1.5263157894736843) internal successors, (377), 249 states have internal predecessors, (377), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 06:33:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 06:33:43,364 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:43,365 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-12-02 06:33:43,365 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:43,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:43,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1828727800, now seen corresponding path program 1 times [2024-12-02 06:33:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:43,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934653809] [2024-12-02 06:33:43,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:43,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 06:33:43,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:43,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934653809] [2024-12-02 06:33:43,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934653809] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:43,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502491960] [2024-12-02 06:33:43,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:43,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:43,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:43,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:43,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:33:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:44,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 06:33:44,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 06:33:44,389 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:33:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502491960] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:44,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:33:44,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-12-02 06:33:44,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406082155] [2024-12-02 06:33:44,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:44,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:33:44,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:44,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:33:44,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:44,421 INFO L87 Difference]: Start difference. First operand has 313 states, 247 states have (on average 1.5263157894736843) internal successors, (377), 249 states have internal predecessors, (377), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:33:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:44,475 INFO L93 Difference]: Finished difference Result 473 states and 693 transitions. [2024-12-02 06:33:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:33:44,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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 108 [2024-12-02 06:33:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:44,488 INFO L225 Difference]: With dead ends: 473 [2024-12-02 06:33:44,488 INFO L226 Difference]: Without dead ends: 306 [2024-12-02 06:33:44,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:44,495 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:44,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:44,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-12-02 06:33:44,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2024-12-02 06:33:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 241 states have (on average 1.5186721991701244) internal successors, (366), 242 states have internal predecessors, (366), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 06:33:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 457 transitions. [2024-12-02 06:33:44,547 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 457 transitions. Word has length 108 [2024-12-02 06:33:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:44,548 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 457 transitions. [2024-12-02 06:33:44,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:33:44,549 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 457 transitions. [2024-12-02 06:33:44,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 06:33:44,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:44,554 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-12-02 06:33:44,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:33:44,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:44,755 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:44,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:44,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1702667278, now seen corresponding path program 1 times [2024-12-02 06:33:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:44,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763330905] [2024-12-02 06:33:44,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:44,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 06:33:45,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:45,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763330905] [2024-12-02 06:33:45,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763330905] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:45,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645158786] [2024-12-02 06:33:45,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:45,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:45,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:45,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:45,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:33:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:45,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:33:45,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 06:33:45,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:33:45,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645158786] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:45,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:33:45,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 06:33:45,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159867777] [2024-12-02 06:33:45,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:45,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:45,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:45,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:45,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:33:45,429 INFO L87 Difference]: Start difference. First operand 306 states and 457 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:33:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:45,466 INFO L93 Difference]: Finished difference Result 462 states and 673 transitions. [2024-12-02 06:33:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:45,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 108 [2024-12-02 06:33:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:45,470 INFO L225 Difference]: With dead ends: 462 [2024-12-02 06:33:45,470 INFO L226 Difference]: Without dead ends: 308 [2024-12-02 06:33:45,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:33:45,472 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 1 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:45,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 908 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-12-02 06:33:45,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2024-12-02 06:33:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 242 states have (on average 1.5165289256198347) internal successors, (367), 243 states have internal predecessors, (367), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 06:33:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 458 transitions. [2024-12-02 06:33:45,496 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 458 transitions. Word has length 108 [2024-12-02 06:33:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:45,497 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 458 transitions. [2024-12-02 06:33:45,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:33:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 458 transitions. [2024-12-02 06:33:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 06:33:45,500 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:45,500 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:45,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:33:45,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 06:33:45,701 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:45,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1812994213, now seen corresponding path program 1 times [2024-12-02 06:33:45,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:45,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681866375] [2024-12-02 06:33:45,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:45,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 06:33:45,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:45,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681866375] [2024-12-02 06:33:45,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681866375] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:45,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870388087] [2024-12-02 06:33:45,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:45,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:45,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:45,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:45,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:33:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:46,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:33:46,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 06:33:46,363 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:33:46,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870388087] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:46,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:33:46,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 06:33:46,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489923345] [2024-12-02 06:33:46,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:46,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:46,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:46,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:46,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:33:46,365 INFO L87 Difference]: Start difference. First operand 307 states and 458 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:33:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:46,399 INFO L93 Difference]: Finished difference Result 644 states and 975 transitions. [2024-12-02 06:33:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:46,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 113 [2024-12-02 06:33:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:46,404 INFO L225 Difference]: With dead ends: 644 [2024-12-02 06:33:46,404 INFO L226 Difference]: Without dead ends: 363 [2024-12-02 06:33:46,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:33:46,406 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 107 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:46,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 881 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:46,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-12-02 06:33:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 355. [2024-12-02 06:33:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 279 states have (on average 1.5340501792114696) internal successors, (428), 280 states have internal predecessors, (428), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-12-02 06:33:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 541 transitions. [2024-12-02 06:33:46,431 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 541 transitions. Word has length 113 [2024-12-02 06:33:46,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:46,432 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 541 transitions. [2024-12-02 06:33:46,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:33:46,432 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 541 transitions. [2024-12-02 06:33:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 06:33:46,435 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:46,435 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:46,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:33:46,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-02 06:33:46,636 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:46,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1160753693, now seen corresponding path program 1 times [2024-12-02 06:33:46,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:46,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474806968] [2024-12-02 06:33:46,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:46,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 06:33:46,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:46,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474806968] [2024-12-02 06:33:46,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474806968] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:46,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431295278] [2024-12-02 06:33:46,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:46,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:46,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:46,865 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:46,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:33:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:47,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 06:33:47,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:33:47,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:33:47,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431295278] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:47,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:33:47,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 06:33:47,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000313842] [2024-12-02 06:33:47,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:47,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:33:47,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:47,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:33:47,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:33:47,227 INFO L87 Difference]: Start difference. First operand 355 states and 541 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:33:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:47,302 INFO L93 Difference]: Finished difference Result 701 states and 1072 transitions. [2024-12-02 06:33:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:33:47,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2024-12-02 06:33:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:47,307 INFO L225 Difference]: With dead ends: 701 [2024-12-02 06:33:47,307 INFO L226 Difference]: Without dead ends: 357 [2024-12-02 06:33:47,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:33:47,309 INFO L435 NwaCegarLoop]: 449 mSDtfsCounter, 2 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:47,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1785 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-12-02 06:33:47,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-12-02 06:33:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 280 states have (on average 1.5321428571428573) internal successors, (429), 282 states have internal predecessors, (429), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2024-12-02 06:33:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 544 transitions. [2024-12-02 06:33:47,327 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 544 transitions. Word has length 114 [2024-12-02 06:33:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:47,327 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 544 transitions. [2024-12-02 06:33:47,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:33:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 544 transitions. [2024-12-02 06:33:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 06:33:47,330 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:47,330 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:47,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:33:47,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:47,531 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:47,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1278370339, now seen corresponding path program 1 times [2024-12-02 06:33:47,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:47,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229165022] [2024-12-02 06:33:47,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 06:33:47,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:47,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229165022] [2024-12-02 06:33:47,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229165022] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:47,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198326927] [2024-12-02 06:33:47,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:47,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:47,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:47,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:47,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:33:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:48,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:33:48,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:33:48,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:33:48,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198326927] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:48,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:33:48,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 06:33:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198776817] [2024-12-02 06:33:48,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:48,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:33:48,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:48,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:33:48,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:33:48,122 INFO L87 Difference]: Start difference. First operand 357 states and 544 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:33:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:48,212 INFO L93 Difference]: Finished difference Result 703 states and 1077 transitions. [2024-12-02 06:33:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:33:48,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 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 115 [2024-12-02 06:33:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:48,217 INFO L225 Difference]: With dead ends: 703 [2024-12-02 06:33:48,217 INFO L226 Difference]: Without dead ends: 359 [2024-12-02 06:33:48,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:33:48,220 INFO L435 NwaCegarLoop]: 447 mSDtfsCounter, 2 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:48,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1771 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-12-02 06:33:48,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2024-12-02 06:33:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 281 states have (on average 1.5302491103202847) internal successors, (430), 284 states have internal predecessors, (430), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2024-12-02 06:33:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 550 transitions. [2024-12-02 06:33:48,245 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 550 transitions. Word has length 115 [2024-12-02 06:33:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:48,245 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 550 transitions. [2024-12-02 06:33:48,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:33:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 550 transitions. [2024-12-02 06:33:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 06:33:48,249 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:48,249 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:48,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 06:33:48,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:48,450 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:48,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1796311375, now seen corresponding path program 1 times [2024-12-02 06:33:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384275064] [2024-12-02 06:33:48,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 06:33:48,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:48,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384275064] [2024-12-02 06:33:48,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384275064] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:48,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:48,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:33:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066846173] [2024-12-02 06:33:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:48,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:33:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:48,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:33:48,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:48,664 INFO L87 Difference]: Start difference. First operand 359 states and 550 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:33:48,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:48,727 INFO L93 Difference]: Finished difference Result 695 states and 1068 transitions. [2024-12-02 06:33:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:33:48,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-12-02 06:33:48,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:48,731 INFO L225 Difference]: With dead ends: 695 [2024-12-02 06:33:48,731 INFO L226 Difference]: Without dead ends: 359 [2024-12-02 06:33:48,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:48,734 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 2 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:48,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1789 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:48,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-12-02 06:33:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2024-12-02 06:33:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 281 states have (on average 1.5302491103202847) internal successors, (430), 284 states have internal predecessors, (430), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2024-12-02 06:33:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 549 transitions. [2024-12-02 06:33:48,756 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 549 transitions. Word has length 116 [2024-12-02 06:33:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:48,757 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 549 transitions. [2024-12-02 06:33:48,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:33:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 549 transitions. [2024-12-02 06:33:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 06:33:48,760 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:48,761 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:48,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:33:48,761 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:48,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:48,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1732687823, now seen corresponding path program 2 times [2024-12-02 06:33:48,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:48,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394409281] [2024-12-02 06:33:48,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:33:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:48,797 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 06:33:48,797 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:33:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:48,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394409281] [2024-12-02 06:33:48,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394409281] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:48,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:48,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:33:48,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275265113] [2024-12-02 06:33:48,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:48,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:33:48,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:48,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:33:48,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:48,897 INFO L87 Difference]: Start difference. First operand 359 states and 549 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:33:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:48,934 INFO L93 Difference]: Finished difference Result 505 states and 752 transitions. [2024-12-02 06:33:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:33:48,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2024-12-02 06:33:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:48,938 INFO L225 Difference]: With dead ends: 505 [2024-12-02 06:33:48,938 INFO L226 Difference]: Without dead ends: 359 [2024-12-02 06:33:48,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:48,940 INFO L435 NwaCegarLoop]: 454 mSDtfsCounter, 0 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:48,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1809 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-12-02 06:33:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2024-12-02 06:33:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 281 states have (on average 1.5266903914590748) internal successors, (429), 284 states have internal predecessors, (429), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2024-12-02 06:33:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 548 transitions. [2024-12-02 06:33:48,961 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 548 transitions. Word has length 117 [2024-12-02 06:33:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:48,962 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 548 transitions. [2024-12-02 06:33:48,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 06:33:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 548 transitions. [2024-12-02 06:33:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 06:33:48,965 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:48,965 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:48,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:33:48,965 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:48,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:48,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1656177515, now seen corresponding path program 1 times [2024-12-02 06:33:48,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:48,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713961420] [2024-12-02 06:33:48,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:48,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 06:33:49,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713961420] [2024-12-02 06:33:49,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713961420] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:49,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:49,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:33:49,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770541169] [2024-12-02 06:33:49,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:49,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:33:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:49,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:33:49,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:49,167 INFO L87 Difference]: Start difference. First operand 359 states and 548 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 06:33:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:49,218 INFO L93 Difference]: Finished difference Result 697 states and 1069 transitions. [2024-12-02 06:33:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:33:49,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 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 124 [2024-12-02 06:33:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:49,222 INFO L225 Difference]: With dead ends: 697 [2024-12-02 06:33:49,222 INFO L226 Difference]: Without dead ends: 361 [2024-12-02 06:33:49,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:33:49,224 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 1 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:49,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1788 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-12-02 06:33:49,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-12-02 06:33:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 282 states have (on average 1.524822695035461) internal successors, (430), 286 states have internal predecessors, (430), 57 states have call successors, (57), 18 states have call predecessors, (57), 21 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2024-12-02 06:33:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 551 transitions. [2024-12-02 06:33:49,244 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 551 transitions. Word has length 124 [2024-12-02 06:33:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:49,245 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 551 transitions. [2024-12-02 06:33:49,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 06:33:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 551 transitions. [2024-12-02 06:33:49,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 06:33:49,248 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:49,248 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 06:33:49,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:33:49,248 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:49,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1877168764, now seen corresponding path program 1 times [2024-12-02 06:33:49,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:49,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775006897] [2024-12-02 06:33:49,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:49,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 06:33:49,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775006897] [2024-12-02 06:33:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775006897] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:49,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:49,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:33:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092256171] [2024-12-02 06:33:49,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:49,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:33:49,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:49,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:33:49,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:33:49,453 INFO L87 Difference]: Start difference. First operand 361 states and 551 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 06:33:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:49,627 INFO L93 Difference]: Finished difference Result 699 states and 1068 transitions. [2024-12-02 06:33:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:33:49,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 125 [2024-12-02 06:33:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:49,631 INFO L225 Difference]: With dead ends: 699 [2024-12-02 06:33:49,632 INFO L226 Difference]: Without dead ends: 363 [2024-12-02 06:33:49,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:33:49,634 INFO L435 NwaCegarLoop]: 440 mSDtfsCounter, 7 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:49,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3051 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:33:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-12-02 06:33:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-12-02 06:33:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 287 states have internal predecessors, (432), 57 states have call successors, (57), 19 states have call predecessors, (57), 21 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2024-12-02 06:33:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 552 transitions. [2024-12-02 06:33:49,658 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 552 transitions. Word has length 125 [2024-12-02 06:33:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:49,658 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 552 transitions. [2024-12-02 06:33:49,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 06:33:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 552 transitions. [2024-12-02 06:33:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 06:33:49,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:49,662 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:49,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:33:49,662 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:49,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash -81769286, now seen corresponding path program 2 times [2024-12-02 06:33:49,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:49,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541744787] [2024-12-02 06:33:49,663 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:33:49,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:49,715 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:33:49,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:33:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 06:33:49,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:49,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541744787] [2024-12-02 06:33:49,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541744787] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:49,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:49,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:33:49,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061140459] [2024-12-02 06:33:49,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:49,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:33:49,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:49,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:33:49,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:33:49,878 INFO L87 Difference]: Start difference. First operand 363 states and 552 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 06:33:49,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:49,976 INFO L93 Difference]: Finished difference Result 699 states and 1072 transitions. [2024-12-02 06:33:49,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:33:49,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 126 [2024-12-02 06:33:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:49,980 INFO L225 Difference]: With dead ends: 699 [2024-12-02 06:33:49,980 INFO L226 Difference]: Without dead ends: 365 [2024-12-02 06:33:49,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:33:49,982 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 2 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:49,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2217 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:33:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-12-02 06:33:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2024-12-02 06:33:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 289 states have internal predecessors, (433), 57 states have call successors, (57), 19 states have call predecessors, (57), 22 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2024-12-02 06:33:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 558 transitions. [2024-12-02 06:33:50,005 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 558 transitions. Word has length 126 [2024-12-02 06:33:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:50,006 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 558 transitions. [2024-12-02 06:33:50,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 06:33:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 558 transitions. [2024-12-02 06:33:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 06:33:50,009 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:50,009 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:50,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:33:50,010 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:50,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 485350145, now seen corresponding path program 1 times [2024-12-02 06:33:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:50,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153482825] [2024-12-02 06:33:50,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:50,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153482825] [2024-12-02 06:33:50,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153482825] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:33:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201459069] [2024-12-02 06:33:50,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:50,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:50,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:33:50,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:33:50,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:33:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:50,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:33:50,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:33:50,608 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:50,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:33:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201459069] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:33:50,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:33:50,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 06:33:50,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505991184] [2024-12-02 06:33:50,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:33:50,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:33:50,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:50,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:33:50,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:33:50,736 INFO L87 Difference]: Start difference. First operand 365 states and 558 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 06:33:50,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:50,975 INFO L93 Difference]: Finished difference Result 865 states and 1373 transitions. [2024-12-02 06:33:50,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:33:50,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 127 [2024-12-02 06:33:50,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:50,983 INFO L225 Difference]: With dead ends: 865 [2024-12-02 06:33:50,983 INFO L226 Difference]: Without dead ends: 711 [2024-12-02 06:33:50,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:33:50,986 INFO L435 NwaCegarLoop]: 478 mSDtfsCounter, 317 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:50,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 2432 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:33:50,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-12-02 06:33:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 687. [2024-12-02 06:33:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 543 states have (on average 1.5930018416206262) internal successors, (865), 547 states have internal predecessors, (865), 121 states have call successors, (121), 19 states have call predecessors, (121), 22 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2024-12-02 06:33:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1128 transitions. [2024-12-02 06:33:51,043 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1128 transitions. Word has length 127 [2024-12-02 06:33:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:51,044 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 1128 transitions. [2024-12-02 06:33:51,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 06:33:51,044 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1128 transitions. [2024-12-02 06:33:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-12-02 06:33:51,050 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:51,051 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:51,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:33:51,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:33:51,251 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:51,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:51,252 INFO L85 PathProgramCache]: Analyzing trace with hash 576566430, now seen corresponding path program 1 times [2024-12-02 06:33:51,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:51,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047404117] [2024-12-02 06:33:51,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:51,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:51,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:51,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047404117] [2024-12-02 06:33:51,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047404117] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:51,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:51,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:51,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988844143] [2024-12-02 06:33:51,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:51,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:51,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:51,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:51,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:51,357 INFO L87 Difference]: Start difference. First operand 687 states and 1128 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:51,403 INFO L93 Difference]: Finished difference Result 1632 states and 2721 transitions. [2024-12-02 06:33:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:51,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2024-12-02 06:33:51,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:51,412 INFO L225 Difference]: With dead ends: 1632 [2024-12-02 06:33:51,412 INFO L226 Difference]: Without dead ends: 1013 [2024-12-02 06:33:51,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:51,416 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 105 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:51,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 922 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2024-12-02 06:33:51,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1005. [2024-12-02 06:33:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 797 states have (on average 1.6097867001254704) internal successors, (1283), 801 states have internal predecessors, (1283), 185 states have call successors, (185), 19 states have call predecessors, (185), 22 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2024-12-02 06:33:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1684 transitions. [2024-12-02 06:33:51,481 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1684 transitions. Word has length 134 [2024-12-02 06:33:51,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:51,482 INFO L471 AbstractCegarLoop]: Abstraction has 1005 states and 1684 transitions. [2024-12-02 06:33:51,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:51,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1684 transitions. [2024-12-02 06:33:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-02 06:33:51,489 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:51,490 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 06:33:51,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:33:51,490 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:51,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1536825049, now seen corresponding path program 1 times [2024-12-02 06:33:51,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:51,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798320511] [2024-12-02 06:33:51,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:51,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:51,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:51,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798320511] [2024-12-02 06:33:51,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798320511] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:51,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:51,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:51,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514964347] [2024-12-02 06:33:51,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:51,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:51,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:51,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:51,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:51,576 INFO L87 Difference]: Start difference. First operand 1005 states and 1684 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:51,637 INFO L93 Difference]: Finished difference Result 2395 states and 4037 transitions. [2024-12-02 06:33:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:51,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2024-12-02 06:33:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:51,671 INFO L225 Difference]: With dead ends: 2395 [2024-12-02 06:33:51,672 INFO L226 Difference]: Without dead ends: 1509 [2024-12-02 06:33:51,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:51,676 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 103 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:51,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 906 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-12-02 06:33:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1501. [2024-12-02 06:33:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1198 states have (on average 1.6210350584307178) internal successors, (1942), 1202 states have internal predecessors, (1942), 280 states have call successors, (280), 19 states have call predecessors, (280), 22 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2024-12-02 06:33:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2533 transitions. [2024-12-02 06:33:51,773 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2533 transitions. Word has length 135 [2024-12-02 06:33:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:51,774 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 2533 transitions. [2024-12-02 06:33:51,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2533 transitions. [2024-12-02 06:33:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 06:33:51,785 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:51,786 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 06:33:51,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:33:51,786 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:51,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1223456096, now seen corresponding path program 1 times [2024-12-02 06:33:51,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:51,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237717094] [2024-12-02 06:33:51,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:51,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:51,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:51,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237717094] [2024-12-02 06:33:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237717094] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:51,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:51,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:51,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555793636] [2024-12-02 06:33:51,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:51,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:51,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:51,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:51,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:51,870 INFO L87 Difference]: Start difference. First operand 1501 states and 2533 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:51,967 INFO L93 Difference]: Finished difference Result 3519 states and 5984 transitions. [2024-12-02 06:33:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:51,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2024-12-02 06:33:51,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:51,986 INFO L225 Difference]: With dead ends: 3519 [2024-12-02 06:33:51,986 INFO L226 Difference]: Without dead ends: 2258 [2024-12-02 06:33:51,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:51,993 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 101 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:51,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 901 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2024-12-02 06:33:52,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2250. [2024-12-02 06:33:52,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 1824 states have (on average 1.6299342105263157) internal successors, (2973), 1828 states have internal predecessors, (2973), 403 states have call successors, (403), 19 states have call predecessors, (403), 22 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2024-12-02 06:33:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 3826 transitions. [2024-12-02 06:33:52,146 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 3826 transitions. Word has length 136 [2024-12-02 06:33:52,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:52,147 INFO L471 AbstractCegarLoop]: Abstraction has 2250 states and 3826 transitions. [2024-12-02 06:33:52,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 3826 transitions. [2024-12-02 06:33:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 06:33:52,163 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:52,163 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 06:33:52,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:33:52,163 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:52,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1488339942, now seen corresponding path program 1 times [2024-12-02 06:33:52,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:52,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316284854] [2024-12-02 06:33:52,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:52,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316284854] [2024-12-02 06:33:52,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316284854] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:52,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:52,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:52,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942824115] [2024-12-02 06:33:52,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:52,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:52,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:52,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:52,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:52,265 INFO L87 Difference]: Start difference. First operand 2250 states and 3826 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:52,391 INFO L93 Difference]: Finished difference Result 5267 states and 9015 transitions. [2024-12-02 06:33:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:52,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2024-12-02 06:33:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:52,418 INFO L225 Difference]: With dead ends: 5267 [2024-12-02 06:33:52,418 INFO L226 Difference]: Without dead ends: 3454 [2024-12-02 06:33:52,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:52,427 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 99 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:52,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 901 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2024-12-02 06:33:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3446. [2024-12-02 06:33:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 2841 states have (on average 1.6356916578669483) internal successors, (4647), 2845 states have internal predecessors, (4647), 582 states have call successors, (582), 19 states have call predecessors, (582), 22 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2024-12-02 06:33:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 5884 transitions. [2024-12-02 06:33:52,668 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 5884 transitions. Word has length 137 [2024-12-02 06:33:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:52,669 INFO L471 AbstractCegarLoop]: Abstraction has 3446 states and 5884 transitions. [2024-12-02 06:33:52,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 5884 transitions. [2024-12-02 06:33:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 06:33:52,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:52,689 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 06:33:52,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:33:52,690 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:52,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash 520034748, now seen corresponding path program 1 times [2024-12-02 06:33:52,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:52,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312339634] [2024-12-02 06:33:52,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:52,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312339634] [2024-12-02 06:33:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312339634] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:52,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:52,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219317502] [2024-12-02 06:33:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:52,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:52,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:52,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:52,792 INFO L87 Difference]: Start difference. First operand 3446 states and 5884 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:52,976 INFO L93 Difference]: Finished difference Result 8138 states and 13985 transitions. [2024-12-02 06:33:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:52,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2024-12-02 06:33:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:53,013 INFO L225 Difference]: With dead ends: 8138 [2024-12-02 06:33:53,013 INFO L226 Difference]: Without dead ends: 5430 [2024-12-02 06:33:53,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:53,027 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 97 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:53,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 914 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:53,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2024-12-02 06:33:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 5422. [2024-12-02 06:33:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5422 states, 4441 states have (on average 1.631164152217969) internal successors, (7244), 4445 states have internal predecessors, (7244), 958 states have call successors, (958), 19 states have call predecessors, (958), 22 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2024-12-02 06:33:53,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 9277 transitions. [2024-12-02 06:33:53,477 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 9277 transitions. Word has length 138 [2024-12-02 06:33:53,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:53,477 INFO L471 AbstractCegarLoop]: Abstraction has 5422 states and 9277 transitions. [2024-12-02 06:33:53,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:53,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 9277 transitions. [2024-12-02 06:33:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 06:33:53,509 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:53,509 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:53,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:33:53,509 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:53,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1362128962, now seen corresponding path program 1 times [2024-12-02 06:33:53,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:53,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289667999] [2024-12-02 06:33:53,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:53,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289667999] [2024-12-02 06:33:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289667999] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:53,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:53,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:53,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372995332] [2024-12-02 06:33:53,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:53,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:53,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:53,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:53,591 INFO L87 Difference]: Start difference. First operand 5422 states and 9277 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:53,818 INFO L93 Difference]: Finished difference Result 13342 states and 22962 transitions. [2024-12-02 06:33:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2024-12-02 06:33:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:53,867 INFO L225 Difference]: With dead ends: 13342 [2024-12-02 06:33:53,867 INFO L226 Difference]: Without dead ends: 9019 [2024-12-02 06:33:53,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:53,880 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 95 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:53,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 904 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9019 states. [2024-12-02 06:33:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9019 to 9011. [2024-12-02 06:33:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9011 states, 7424 states have (on average 1.6293103448275863) internal successors, (12096), 7428 states have internal predecessors, (12096), 1564 states have call successors, (1564), 19 states have call predecessors, (1564), 22 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2024-12-02 06:33:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9011 states to 9011 states and 15419 transitions. [2024-12-02 06:33:54,248 INFO L78 Accepts]: Start accepts. Automaton has 9011 states and 15419 transitions. Word has length 139 [2024-12-02 06:33:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:54,249 INFO L471 AbstractCegarLoop]: Abstraction has 9011 states and 15419 transitions. [2024-12-02 06:33:54,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 9011 states and 15419 transitions. [2024-12-02 06:33:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 06:33:54,273 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:54,274 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:33:54,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:33:54,274 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:54,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash 345158858, now seen corresponding path program 1 times [2024-12-02 06:33:54,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:54,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229608093] [2024-12-02 06:33:54,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:54,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:54,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:54,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229608093] [2024-12-02 06:33:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229608093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:54,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207760285] [2024-12-02 06:33:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:54,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:54,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:54,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:54,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:54,337 INFO L87 Difference]: Start difference. First operand 9011 states and 15419 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:54,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:54,744 INFO L93 Difference]: Finished difference Result 23288 states and 39989 transitions. [2024-12-02 06:33:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:54,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-12-02 06:33:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:54,817 INFO L225 Difference]: With dead ends: 23288 [2024-12-02 06:33:54,817 INFO L226 Difference]: Without dead ends: 15806 [2024-12-02 06:33:54,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:54,841 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 93 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:54,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 918 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:54,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15806 states. [2024-12-02 06:33:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15806 to 15798. [2024-12-02 06:33:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15798 states, 13008 states have (on average 1.6199261992619927) internal successors, (21072), 13012 states have internal predecessors, (21072), 2767 states have call successors, (2767), 19 states have call predecessors, (2767), 22 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2024-12-02 06:33:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15798 states to 15798 states and 26945 transitions. [2024-12-02 06:33:55,624 INFO L78 Accepts]: Start accepts. Automaton has 15798 states and 26945 transitions. Word has length 140 [2024-12-02 06:33:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:55,624 INFO L471 AbstractCegarLoop]: Abstraction has 15798 states and 26945 transitions. [2024-12-02 06:33:55,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 15798 states and 26945 transitions. [2024-12-02 06:33:55,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 06:33:55,663 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:55,663 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 06:33:55,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:33:55,663 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:55,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:55,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1549050337, now seen corresponding path program 1 times [2024-12-02 06:33:55,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:55,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511282314] [2024-12-02 06:33:55,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:55,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511282314] [2024-12-02 06:33:55,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511282314] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:55,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:55,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:55,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100069691] [2024-12-02 06:33:55,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:55,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:55,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:55,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:55,727 INFO L87 Difference]: Start difference. First operand 15798 states and 26945 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:56,314 INFO L93 Difference]: Finished difference Result 41814 states and 71608 transitions. [2024-12-02 06:33:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:56,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2024-12-02 06:33:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:56,421 INFO L225 Difference]: With dead ends: 41814 [2024-12-02 06:33:56,421 INFO L226 Difference]: Without dead ends: 28158 [2024-12-02 06:33:56,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:56,457 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 91 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:56,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 904 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:33:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28158 states. [2024-12-02 06:33:57,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28158 to 28150. [2024-12-02 06:33:57,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28150 states, 23321 states have (on average 1.6154110029587068) internal successors, (37673), 23325 states have internal predecessors, (37673), 4806 states have call successors, (4806), 19 states have call predecessors, (4806), 22 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2024-12-02 06:33:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28150 states to 28150 states and 47898 transitions. [2024-12-02 06:33:57,995 INFO L78 Accepts]: Start accepts. Automaton has 28150 states and 47898 transitions. Word has length 141 [2024-12-02 06:33:57,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:33:57,996 INFO L471 AbstractCegarLoop]: Abstraction has 28150 states and 47898 transitions. [2024-12-02 06:33:57,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand 28150 states and 47898 transitions. [2024-12-02 06:33:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 06:33:58,074 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:33:58,074 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 06:33:58,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 06:33:58,075 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:33:58,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:33:58,075 INFO L85 PathProgramCache]: Analyzing trace with hash 584157772, now seen corresponding path program 1 times [2024-12-02 06:33:58,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:33:58,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661608727] [2024-12-02 06:33:58,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:33:58,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:33:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:33:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:33:58,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:33:58,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661608727] [2024-12-02 06:33:58,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661608727] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:33:58,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:33:58,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:33:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358814563] [2024-12-02 06:33:58,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:33:58,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:33:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:33:58,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:33:58,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:58,195 INFO L87 Difference]: Start difference. First operand 28150 states and 47898 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:33:59,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:33:59,699 INFO L93 Difference]: Finished difference Result 76741 states and 131000 transitions. [2024-12-02 06:33:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:33:59,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2024-12-02 06:33:59,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:33:59,921 INFO L225 Difference]: With dead ends: 76741 [2024-12-02 06:33:59,921 INFO L226 Difference]: Without dead ends: 51468 [2024-12-02 06:33:59,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:33:59,988 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 89 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:33:59,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 905 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:34:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51468 states. [2024-12-02 06:34:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51468 to 51460. [2024-12-02 06:34:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51460 states, 42916 states have (on average 1.6094929629974835) internal successors, (69073), 42920 states have internal predecessors, (69073), 8521 states have call successors, (8521), 19 states have call predecessors, (8521), 22 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2024-12-02 06:34:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51460 states to 51460 states and 87260 transitions. [2024-12-02 06:34:01,825 INFO L78 Accepts]: Start accepts. Automaton has 51460 states and 87260 transitions. Word has length 142 [2024-12-02 06:34:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:01,825 INFO L471 AbstractCegarLoop]: Abstraction has 51460 states and 87260 transitions. [2024-12-02 06:34:01,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:34:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 51460 states and 87260 transitions. [2024-12-02 06:34:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 06:34:01,880 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:01,880 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 06:34:01,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:34:01,881 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:01,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash -248403425, now seen corresponding path program 1 times [2024-12-02 06:34:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624180844] [2024-12-02 06:34:01,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:34:01,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:01,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624180844] [2024-12-02 06:34:01,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624180844] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:01,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:01,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:34:01,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839126594] [2024-12-02 06:34:01,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:01,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:34:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:01,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:34:01,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:34:01,943 INFO L87 Difference]: Start difference. First operand 51460 states and 87260 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:34:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:04,775 INFO L93 Difference]: Finished difference Result 95993 states and 163099 transitions. [2024-12-02 06:34:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:34:04,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2024-12-02 06:34:04,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:05,413 INFO L225 Difference]: With dead ends: 95993 [2024-12-02 06:34:05,413 INFO L226 Difference]: Without dead ends: 95839 [2024-12-02 06:34:05,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:34:05,448 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 84 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:05,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 918 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:34:05,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95839 states. [2024-12-02 06:34:08,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95839 to 95831. [2024-12-02 06:34:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95831 states, 80488 states have (on average 1.6021642977835204) internal successors, (128955), 80492 states have internal predecessors, (128955), 15320 states have call successors, (15320), 19 states have call predecessors, (15320), 22 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2024-12-02 06:34:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95831 states to 95831 states and 161786 transitions. [2024-12-02 06:34:08,780 INFO L78 Accepts]: Start accepts. Automaton has 95831 states and 161786 transitions. Word has length 143 [2024-12-02 06:34:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:08,780 INFO L471 AbstractCegarLoop]: Abstraction has 95831 states and 161786 transitions. [2024-12-02 06:34:08,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:34:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 95831 states and 161786 transitions. [2024-12-02 06:34:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 06:34:08,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:08,874 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 06:34:08,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 06:34:08,874 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:08,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:08,875 INFO L85 PathProgramCache]: Analyzing trace with hash -64787605, now seen corresponding path program 1 times [2024-12-02 06:34:08,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:08,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626761946] [2024-12-02 06:34:08,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:08,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:34:09,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:09,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626761946] [2024-12-02 06:34:09,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626761946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:09,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:09,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:34:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704410815] [2024-12-02 06:34:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:09,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:34:09,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:09,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:34:09,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:34:09,103 INFO L87 Difference]: Start difference. First operand 95831 states and 161786 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:34:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:12,223 INFO L93 Difference]: Finished difference Result 96129 states and 162199 transitions. [2024-12-02 06:34:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:34:12,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2024-12-02 06:34:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:12,550 INFO L225 Difference]: With dead ends: 96129 [2024-12-02 06:34:12,550 INFO L226 Difference]: Without dead ends: 95983 [2024-12-02 06:34:12,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:34:12,586 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 389 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:12,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2065 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:34:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95983 states. [2024-12-02 06:34:15,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95983 to 95979. [2024-12-02 06:34:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95979 states, 80606 states have (on average 1.6018906781132918) internal successors, (129122), 80610 states have internal predecessors, (129122), 15338 states have call successors, (15338), 29 states have call predecessors, (15338), 34 states have return successors, (17532), 15339 states have call predecessors, (17532), 15336 states have call successors, (17532) [2024-12-02 06:34:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95979 states to 95979 states and 161992 transitions. [2024-12-02 06:34:15,831 INFO L78 Accepts]: Start accepts. Automaton has 95979 states and 161992 transitions. Word has length 144 [2024-12-02 06:34:15,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:15,831 INFO L471 AbstractCegarLoop]: Abstraction has 95979 states and 161992 transitions. [2024-12-02 06:34:15,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 06:34:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 95979 states and 161992 transitions. [2024-12-02 06:34:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 06:34:15,899 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:15,899 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:15,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 06:34:15,899 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:15,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash 443125680, now seen corresponding path program 1 times [2024-12-02 06:34:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274013326] [2024-12-02 06:34:15,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:34:16,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:16,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274013326] [2024-12-02 06:34:16,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274013326] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:16,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:16,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 06:34:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434918099] [2024-12-02 06:34:16,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:16,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 06:34:16,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:16,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 06:34:16,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 06:34:16,237 INFO L87 Difference]: Start difference. First operand 95979 states and 161992 transitions. Second operand has 13 states, 11 states have (on average 9.090909090909092) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2024-12-02 06:34:19,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:19,470 INFO L93 Difference]: Finished difference Result 96406 states and 162595 transitions. [2024-12-02 06:34:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 06:34:19,470 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.090909090909092) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 145 [2024-12-02 06:34:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:19,915 INFO L225 Difference]: With dead ends: 96406 [2024-12-02 06:34:19,915 INFO L226 Difference]: Without dead ends: 96038 [2024-12-02 06:34:19,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:34:19,964 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 145 mSDsluCounter, 4880 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 5325 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:19,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 5325 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:34:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96038 states. [2024-12-02 06:34:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96038 to 96034. [2024-12-02 06:34:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96034 states, 80648 states have (on average 1.601775617498264) internal successors, (129180), 80655 states have internal predecessors, (129180), 15349 states have call successors, (15349), 30 states have call predecessors, (15349), 36 states have return successors, (17545), 15348 states have call predecessors, (17545), 15347 states have call successors, (17545) [2024-12-02 06:34:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96034 states to 96034 states and 162074 transitions. [2024-12-02 06:34:23,525 INFO L78 Accepts]: Start accepts. Automaton has 96034 states and 162074 transitions. Word has length 145 [2024-12-02 06:34:23,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:23,525 INFO L471 AbstractCegarLoop]: Abstraction has 96034 states and 162074 transitions. [2024-12-02 06:34:23,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.090909090909092) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2024-12-02 06:34:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 96034 states and 162074 transitions. [2024-12-02 06:34:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 06:34:23,685 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:23,685 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:23,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 06:34:23,685 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:23,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1365008741, now seen corresponding path program 1 times [2024-12-02 06:34:23,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:23,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554370314] [2024-12-02 06:34:23,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:23,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 06:34:23,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:23,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554370314] [2024-12-02 06:34:23,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554370314] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:23,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:23,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:34:23,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684272053] [2024-12-02 06:34:23,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:23,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:34:23,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:23,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:34:23,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:34:23,895 INFO L87 Difference]: Start difference. First operand 96034 states and 162074 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 06:34:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:27,619 INFO L93 Difference]: Finished difference Result 96711 states and 163020 transitions. [2024-12-02 06:34:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:34:27,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2024-12-02 06:34:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:28,067 INFO L225 Difference]: With dead ends: 96711 [2024-12-02 06:34:28,068 INFO L226 Difference]: Without dead ends: 96389 [2024-12-02 06:34:28,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:34:28,124 INFO L435 NwaCegarLoop]: 620 mSDtfsCounter, 393 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:28,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 2564 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:34:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96389 states. [2024-12-02 06:34:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96389 to 96381. [2024-12-02 06:34:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96381 states, 80921 states have (on average 1.601080065743132) internal successors, (129561), 80932 states have internal predecessors, (129561), 15396 states have call successors, (15396), 50 states have call predecessors, (15396), 63 states have return successors, (17603), 15398 states have call predecessors, (17603), 15392 states have call successors, (17603) [2024-12-02 06:34:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96381 states to 96381 states and 162560 transitions. [2024-12-02 06:34:31,831 INFO L78 Accepts]: Start accepts. Automaton has 96381 states and 162560 transitions. Word has length 169 [2024-12-02 06:34:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:31,832 INFO L471 AbstractCegarLoop]: Abstraction has 96381 states and 162560 transitions. [2024-12-02 06:34:31,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 06:34:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand 96381 states and 162560 transitions. [2024-12-02 06:34:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 06:34:32,024 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:32,025 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:32,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 06:34:32,025 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:32,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:32,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1538444149, now seen corresponding path program 1 times [2024-12-02 06:34:32,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:32,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612134799] [2024-12-02 06:34:32,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:32,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 06:34:32,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:32,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612134799] [2024-12-02 06:34:32,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612134799] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:32,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:32,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 06:34:32,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314286965] [2024-12-02 06:34:32,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:32,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 06:34:32,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:32,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 06:34:32,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 06:34:32,325 INFO L87 Difference]: Start difference. First operand 96381 states and 162560 transitions. Second operand has 12 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 06:34:34,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:34,597 INFO L93 Difference]: Finished difference Result 96902 states and 163281 transitions. [2024-12-02 06:34:34,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 06:34:34,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 170 [2024-12-02 06:34:34,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:34,994 INFO L225 Difference]: With dead ends: 96902 [2024-12-02 06:34:34,994 INFO L226 Difference]: Without dead ends: 96248 [2024-12-02 06:34:35,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:34:35,052 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 134 mSDsluCounter, 4393 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 4838 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:35,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 4838 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:34:35,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96248 states. [2024-12-02 06:34:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96248 to 96241. [2024-12-02 06:34:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96241 states, 80810 states have (on average 1.601373592377181) internal successors, (129407), 80823 states have internal predecessors, (129407), 15375 states have call successors, (15375), 43 states have call predecessors, (15375), 55 states have return successors, (17580), 15374 states have call predecessors, (17580), 15372 states have call successors, (17580) [2024-12-02 06:34:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96241 states to 96241 states and 162362 transitions. [2024-12-02 06:34:38,583 INFO L78 Accepts]: Start accepts. Automaton has 96241 states and 162362 transitions. Word has length 170 [2024-12-02 06:34:38,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:38,583 INFO L471 AbstractCegarLoop]: Abstraction has 96241 states and 162362 transitions. [2024-12-02 06:34:38,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 06:34:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 96241 states and 162362 transitions. [2024-12-02 06:34:39,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 06:34:39,009 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:39,009 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:39,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 06:34:39,009 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:39,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:39,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1958252197, now seen corresponding path program 1 times [2024-12-02 06:34:39,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:39,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704467452] [2024-12-02 06:34:39,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:39,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 06:34:39,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:39,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704467452] [2024-12-02 06:34:39,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704467452] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:34:39,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747088780] [2024-12-02 06:34:39,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:39,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:34:39,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:34:39,407 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:34:39,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:34:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:39,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 06:34:39,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:34:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:34:40,139 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:34:40,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747088780] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:40,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:34:40,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 27 [2024-12-02 06:34:40,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989218695] [2024-12-02 06:34:40,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:40,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 06:34:40,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:40,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 06:34:40,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2024-12-02 06:34:40,141 INFO L87 Difference]: Start difference. First operand 96241 states and 162362 transitions. Second operand has 13 states, 12 states have (on average 10.75) internal successors, (129), 11 states have internal predecessors, (129), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 06:34:44,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:44,617 INFO L93 Difference]: Finished difference Result 97362 states and 163941 transitions. [2024-12-02 06:34:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 06:34:44,617 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 10.75) internal successors, (129), 11 states have internal predecessors, (129), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 173 [2024-12-02 06:34:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:45,026 INFO L225 Difference]: With dead ends: 97362 [2024-12-02 06:34:45,026 INFO L226 Difference]: Without dead ends: 96960 [2024-12-02 06:34:45,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=1541, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 06:34:45,081 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 723 mSDsluCounter, 4912 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 5421 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:45,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 5421 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 06:34:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96960 states. [2024-12-02 06:34:48,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96960 to 96832. [2024-12-02 06:34:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96832 states, 81263 states have (on average 1.6001747412721656) internal successors, (130035), 81294 states have internal predecessors, (130035), 15462 states have call successors, (15462), 75 states have call predecessors, (15462), 106 states have return successors, (17706), 15462 states have call predecessors, (17706), 15456 states have call successors, (17706) [2024-12-02 06:34:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96832 states to 96832 states and 163203 transitions. [2024-12-02 06:34:48,827 INFO L78 Accepts]: Start accepts. Automaton has 96832 states and 163203 transitions. Word has length 173 [2024-12-02 06:34:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:48,828 INFO L471 AbstractCegarLoop]: Abstraction has 96832 states and 163203 transitions. [2024-12-02 06:34:48,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 10.75) internal successors, (129), 11 states have internal predecessors, (129), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 06:34:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 96832 states and 163203 transitions. [2024-12-02 06:34:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:34:49,006 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:49,006 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:49,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:34:49,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 06:34:49,207 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:49,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash 659860058, now seen corresponding path program 1 times [2024-12-02 06:34:49,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:49,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810184210] [2024-12-02 06:34:49,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 06:34:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810184210] [2024-12-02 06:34:49,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810184210] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:34:49,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:34:49,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:34:49,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055655734] [2024-12-02 06:34:49,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:34:49,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:34:49,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:49,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:34:49,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:34:49,303 INFO L87 Difference]: Start difference. First operand 96832 states and 163203 transitions. Second operand has 5 states, 4 states have (on average 29.0) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 06:34:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:34:51,614 INFO L93 Difference]: Finished difference Result 97279 states and 163808 transitions. [2024-12-02 06:34:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:34:51,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.0) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 174 [2024-12-02 06:34:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:34:51,946 INFO L225 Difference]: With dead ends: 97279 [2024-12-02 06:34:51,946 INFO L226 Difference]: Without dead ends: 96711 [2024-12-02 06:34:51,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:34:51,979 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 2 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:34:51,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1793 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:34:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96711 states. [2024-12-02 06:34:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96711 to 96701. [2024-12-02 06:34:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96701 states, 81160 states have (on average 1.6004066042385412) internal successors, (129889), 81183 states have internal predecessors, (129889), 15442 states have call successors, (15442), 72 states have call predecessors, (15442), 98 states have return successors, (17672), 15445 states have call predecessors, (17672), 15436 states have call successors, (17672) [2024-12-02 06:34:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96701 states to 96701 states and 163003 transitions. [2024-12-02 06:34:55,570 INFO L78 Accepts]: Start accepts. Automaton has 96701 states and 163003 transitions. Word has length 174 [2024-12-02 06:34:55,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:34:55,571 INFO L471 AbstractCegarLoop]: Abstraction has 96701 states and 163003 transitions. [2024-12-02 06:34:55,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.0) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 06:34:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 96701 states and 163003 transitions. [2024-12-02 06:34:55,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:34:55,741 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:34:55,742 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:34:55,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 06:34:55,742 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:34:55,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:34:55,743 INFO L85 PathProgramCache]: Analyzing trace with hash -851714083, now seen corresponding path program 1 times [2024-12-02 06:34:55,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:34:55,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007281319] [2024-12-02 06:34:55,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:55,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:34:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 06:34:56,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:34:56,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007281319] [2024-12-02 06:34:56,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007281319] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:34:56,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412704904] [2024-12-02 06:34:56,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:34:56,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:34:56,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:34:56,070 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:34:56,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:34:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:34:56,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 06:34:56,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:34:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:34:56,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:34:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:34:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412704904] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:34:57,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:34:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2024-12-02 06:34:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874109547] [2024-12-02 06:34:57,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:34:57,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 06:34:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:34:57,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 06:34:57,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1106, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 06:34:57,342 INFO L87 Difference]: Start difference. First operand 96701 states and 163003 transitions. Second operand has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 31 states have internal predecessors, (304), 10 states have call successors, (53), 9 states have call predecessors, (53), 13 states have return successors, (49), 13 states have call predecessors, (49), 10 states have call successors, (49) [2024-12-02 06:35:14,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:14,113 INFO L93 Difference]: Finished difference Result 195923 states and 336147 transitions. [2024-12-02 06:35:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-12-02 06:35:14,114 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 31 states have internal predecessors, (304), 10 states have call successors, (53), 9 states have call predecessors, (53), 13 states have return successors, (49), 13 states have call predecessors, (49), 10 states have call successors, (49) Word has length 174 [2024-12-02 06:35:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:35:15,010 INFO L225 Difference]: With dead ends: 195923 [2024-12-02 06:35:15,010 INFO L226 Difference]: Without dead ends: 194961 [2024-12-02 06:35:15,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4744 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1703, Invalid=15327, Unknown=0, NotChecked=0, Total=17030 [2024-12-02 06:35:15,108 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 5888 mSDsluCounter, 4185 mSDsCounter, 0 mSdLazyCounter, 12750 mSolverCounterSat, 1485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5891 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 14235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1485 IncrementalHoareTripleChecker+Valid, 12750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:35:15,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5891 Valid, 4365 Invalid, 14235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1485 Valid, 12750 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-12-02 06:35:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194961 states. [2024-12-02 06:35:24,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194961 to 194425. [2024-12-02 06:35:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194425 states, 163125 states have (on average 1.599344061302682) internal successors, (260893), 163190 states have internal predecessors, (260893), 31016 states have call successors, (31016), 198 states have call predecessors, (31016), 283 states have return successors, (37718), 31036 states have call predecessors, (37718), 30998 states have call successors, (37718) [2024-12-02 06:35:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194425 states to 194425 states and 329627 transitions. [2024-12-02 06:35:25,737 INFO L78 Accepts]: Start accepts. Automaton has 194425 states and 329627 transitions. Word has length 174 [2024-12-02 06:35:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:35:25,738 INFO L471 AbstractCegarLoop]: Abstraction has 194425 states and 329627 transitions. [2024-12-02 06:35:25,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 31 states have internal predecessors, (304), 10 states have call successors, (53), 9 states have call predecessors, (53), 13 states have return successors, (49), 13 states have call predecessors, (49), 10 states have call successors, (49) [2024-12-02 06:35:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 194425 states and 329627 transitions. [2024-12-02 06:35:26,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 06:35:26,107 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:35:26,107 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:35:26,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:35:26,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 06:35:26,308 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:35:26,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:35:26,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2087016242, now seen corresponding path program 1 times [2024-12-02 06:35:26,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:35:26,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362259878] [2024-12-02 06:35:26,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:26,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:35:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 06:35:26,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:35:26,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362259878] [2024-12-02 06:35:26,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362259878] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:35:26,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90611845] [2024-12-02 06:35:26,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:35:26,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:35:26,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:35:26,948 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:35:26,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:35:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:35:27,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 06:35:27,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:35:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 06:35:28,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:35:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 06:35:29,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90611845] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:29,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:35:29,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 18] total 53 [2024-12-02 06:35:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361997671] [2024-12-02 06:35:29,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:29,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 06:35:29,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:35:29,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 06:35:29,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2567, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 06:35:29,111 INFO L87 Difference]: Start difference. First operand 194425 states and 329627 transitions. Second operand has 53 states, 44 states have (on average 7.181818181818182) internal successors, (316), 49 states have internal predecessors, (316), 17 states have call successors, (56), 10 states have call predecessors, (56), 20 states have return successors, (50), 12 states have call predecessors, (50), 17 states have call successors, (50) [2024-12-02 06:35:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:35:59,683 INFO L93 Difference]: Finished difference Result 590129 states and 1021010 transitions. [2024-12-02 06:35:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 06:35:59,683 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 44 states have (on average 7.181818181818182) internal successors, (316), 49 states have internal predecessors, (316), 17 states have call successors, (56), 10 states have call predecessors, (56), 20 states have return successors, (50), 12 states have call predecessors, (50), 17 states have call successors, (50) Word has length 175 [2024-12-02 06:35:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:02,608 INFO L225 Difference]: With dead ends: 590129 [2024-12-02 06:36:02,609 INFO L226 Difference]: Without dead ends: 587906 [2024-12-02 06:36:02,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1001, Invalid=9099, Unknown=0, NotChecked=0, Total=10100 [2024-12-02 06:36:02,812 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 4398 mSDsluCounter, 4828 mSDsCounter, 0 mSdLazyCounter, 15042 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4428 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 16238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 15042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:02,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4428 Valid, 4992 Invalid, 16238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1196 Valid, 15042 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-12-02 06:36:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587906 states. [2024-12-02 06:36:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587906 to 584551. [2024-12-02 06:36:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584551 states, 490326 states have (on average 1.5987608244310927) internal successors, (783914), 490449 states have internal predecessors, (783914), 93063 states have call successors, (93063), 772 states have call predecessors, (93063), 1161 states have return successors, (135262), 93329 states have call predecessors, (135262), 92991 states have call successors, (135262) [2024-12-02 06:36:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584551 states to 584551 states and 1012239 transitions. [2024-12-02 06:36:37,922 INFO L78 Accepts]: Start accepts. Automaton has 584551 states and 1012239 transitions. Word has length 175 [2024-12-02 06:36:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:37,923 INFO L471 AbstractCegarLoop]: Abstraction has 584551 states and 1012239 transitions. [2024-12-02 06:36:37,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 44 states have (on average 7.181818181818182) internal successors, (316), 49 states have internal predecessors, (316), 17 states have call successors, (56), 10 states have call predecessors, (56), 20 states have return successors, (50), 12 states have call predecessors, (50), 17 states have call successors, (50) [2024-12-02 06:36:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 584551 states and 1012239 transitions. [2024-12-02 06:36:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 06:36:40,047 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:36:40,047 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:36:40,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 06:36:40,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd0405b-8d63-4ff8-9bbc-7c305ef8840c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 06:36:40,248 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:36:40,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:36:40,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1330196858, now seen corresponding path program 1 times [2024-12-02 06:36:40,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:36:40,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7794508] [2024-12-02 06:36:40,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:36:40,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:36:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:36:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 06:36:40,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:36:40,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7794508] [2024-12-02 06:36:40,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7794508] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:36:40,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:36:40,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 06:36:40,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55471259] [2024-12-02 06:36:40,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:36:40,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 06:36:40,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:36:40,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 06:36:40,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:36:40,566 INFO L87 Difference]: Start difference. First operand 584551 states and 1012239 transitions. Second operand has 11 states, 9 states have (on average 13.0) internal successors, (117), 10 states have internal predecessors, (117), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18)