./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu --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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:42,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:43,064 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:35:43,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:43,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:43,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:43,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:43,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:43,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:43,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:43,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:43,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:43,119 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:43,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:43,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:43,122 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:43,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:43,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:43,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:43,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:43,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:43,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:43,127 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:43,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:43,128 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:43,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:43,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:43,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:43,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:43,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:43,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:43,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:43,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:43,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:43,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:43,134 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:43,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:43,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:43,136 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:43,137 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2023-11-19 07:35:43,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:43,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:43,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:43,557 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:43,558 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:43,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2023-11-19 07:35:46,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:47,163 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:47,163 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2023-11-19 07:35:47,192 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/data/ad66a9138/3cc5dbdfe82a49aabb5ba6f6131f4965/FLAG2fc6a3999 [2023-11-19 07:35:47,208 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/data/ad66a9138/3cc5dbdfe82a49aabb5ba6f6131f4965 [2023-11-19 07:35:47,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:47,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:47,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:47,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:47,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:47,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:47" (1/1) ... [2023-11-19 07:35:47,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1828f12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:47, skipping insertion in model container [2023-11-19 07:35:47,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:47" (1/1) ... [2023-11-19 07:35:47,316 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:47,669 WARN L240 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_dff9d8d5-02c4-499f-bb94-349755e28b5b/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2023-11-19 07:35:47,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:47,933 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:47,949 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2023-11-19 07:35:47,950 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [147] [2023-11-19 07:35:47,951 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [165] [2023-11-19 07:35:47,951 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [832] [2023-11-19 07:35:47,951 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [952] [2023-11-19 07:35:47,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [961] [2023-11-19 07:35:47,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2404] [2023-11-19 07:35:47,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2442] [2023-11-19 07:35:47,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2790] [2023-11-19 07:35:47,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2976] [2023-11-19 07:35:47,986 WARN L240 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_dff9d8d5-02c4-499f-bb94-349755e28b5b/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2023-11-19 07:35:48,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:48,110 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:48,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48 WrapperNode [2023-11-19 07:35:48,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:48,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:48,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:48,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:48,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,229 INFO L138 Inliner]: procedures = 87, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 807 [2023-11-19 07:35:48,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:48,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:48,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:48,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:48,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,314 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:48,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:48,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:48,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:48,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (1/1) ... [2023-11-19 07:35:48,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:48,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:48,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:48,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dff9d8d5-02c4-499f-bb94-349755e28b5b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-19 07:35:48,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-19 07:35:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-19 07:35:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-19 07:35:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-19 07:35:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-19 07:35:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-19 07:35:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-19 07:35:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-19 07:35:48,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-19 07:35:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 07:35:48,466 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 07:35:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 07:35:48,467 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 07:35:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-19 07:35:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-19 07:35:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-19 07:35:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-19 07:35:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-19 07:35:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-19 07:35:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-19 07:35:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-19 07:35:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-11-19 07:35:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-11-19 07:35:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-19 07:35:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-19 07:35:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-11-19 07:35:48,472 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-11-19 07:35:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-19 07:35:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-19 07:35:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-19 07:35:48,474 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-19 07:35:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-19 07:35:48,474 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-19 07:35:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-19 07:35:48,474 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-19 07:35:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-19 07:35:48,475 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-19 07:35:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-19 07:35:48,475 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-19 07:35:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-19 07:35:48,476 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-19 07:35:48,476 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-19 07:35:48,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-19 07:35:48,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:48,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-19 07:35:48,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-19 07:35:48,656 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:48,659 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:49,996 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:50,012 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:50,012 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:35:50,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:50 BoogieIcfgContainer [2023-11-19 07:35:50,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:50,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:50,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:50,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:50,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:47" (1/3) ... [2023-11-19 07:35:50,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370e6a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:50, skipping insertion in model container [2023-11-19 07:35:50,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:48" (2/3) ... [2023-11-19 07:35:50,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370e6a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:50, skipping insertion in model container [2023-11-19 07:35:50,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:50" (3/3) ... [2023-11-19 07:35:50,031 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2023-11-19 07:35:50,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:50,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:35:50,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:50,128 INFO L357 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, mHoare=true, 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;@3d58c179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:50,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:35:50,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 555 states, 432 states have (on average 1.6944444444444444) internal successors, (732), 450 states have internal predecessors, (732), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-19 07:35:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 07:35:50,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:50,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:50,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:50,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:50,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1881157288, now seen corresponding path program 1 times [2023-11-19 07:35:50,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:50,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208312254] [2023-11-19 07:35:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:35:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:35:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:35:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:35:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:35:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 07:35:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 07:35:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:35:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-19 07:35:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 07:35:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:35:51,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:51,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208312254] [2023-11-19 07:35:51,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208312254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:51,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:51,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:35:51,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138784975] [2023-11-19 07:35:51,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:51,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:35:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:51,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:35:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:35:51,975 INFO L87 Difference]: Start difference. First operand has 555 states, 432 states have (on average 1.6944444444444444) internal successors, (732), 450 states have internal predecessors, (732), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:36:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:02,106 INFO L93 Difference]: Finished difference Result 1464 states and 2552 transitions. [2023-11-19 07:36:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:36:02,109 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2023-11-19 07:36:02,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:02,150 INFO L225 Difference]: With dead ends: 1464 [2023-11-19 07:36:02,150 INFO L226 Difference]: Without dead ends: 909 [2023-11-19 07:36:02,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:36:02,172 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 1700 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 5294 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 5727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 5294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:02,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 3193 Invalid, 5727 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [433 Valid, 5294 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-19 07:36:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-11-19 07:36:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 558. [2023-11-19 07:36:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6850574712643678) internal successors, (733), 453 states have internal predecessors, (733), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2023-11-19 07:36:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 930 transitions. [2023-11-19 07:36:02,590 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 930 transitions. Word has length 85 [2023-11-19 07:36:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:02,591 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 930 transitions. [2023-11-19 07:36:02,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:36:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 930 transitions. [2023-11-19 07:36:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 07:36:02,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:02,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:02,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:02,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:02,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash 782189340, now seen corresponding path program 1 times [2023-11-19 07:36:02,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132968547] [2023-11-19 07:36:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:02,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:36:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:36:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:36:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 07:36:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:36:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:36:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 07:36:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 07:36:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:36:03,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:03,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132968547] [2023-11-19 07:36:03,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132968547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:03,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:03,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:36:03,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296406285] [2023-11-19 07:36:03,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:03,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:36:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:36:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:03,617 INFO L87 Difference]: Start difference. First operand 558 states and 930 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:36:13,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:13,301 INFO L93 Difference]: Finished difference Result 1452 states and 2496 transitions. [2023-11-19 07:36:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:36:13,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2023-11-19 07:36:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:13,313 INFO L225 Difference]: With dead ends: 1452 [2023-11-19 07:36:13,313 INFO L226 Difference]: Without dead ends: 910 [2023-11-19 07:36:13,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:36:13,320 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1658 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 5288 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 5728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 5288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:13,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 2929 Invalid, 5728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [440 Valid, 5288 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-19 07:36:13,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-11-19 07:36:13,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 558. [2023-11-19 07:36:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6827586206896552) internal successors, (732), 453 states have internal predecessors, (732), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2023-11-19 07:36:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 929 transitions. [2023-11-19 07:36:13,488 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 929 transitions. Word has length 86 [2023-11-19 07:36:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:13,489 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 929 transitions. [2023-11-19 07:36:13,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:36:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 929 transitions. [2023-11-19 07:36:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 07:36:13,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:13,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:13,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:13,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:13,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:13,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1830753775, now seen corresponding path program 1 times [2023-11-19 07:36:13,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:13,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259167218] [2023-11-19 07:36:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:13,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:13,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:36:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:36:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:36:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 07:36:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:36:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:36:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 07:36:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 07:36:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:36:14,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:14,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259167218] [2023-11-19 07:36:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259167218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:14,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:14,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645097628] [2023-11-19 07:36:14,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:14,168 INFO L87 Difference]: Start difference. First operand 558 states and 929 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 07:36:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:21,670 INFO L93 Difference]: Finished difference Result 1445 states and 2478 transitions. [2023-11-19 07:36:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:36:21,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-11-19 07:36:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:21,684 INFO L225 Difference]: With dead ends: 1445 [2023-11-19 07:36:21,684 INFO L226 Difference]: Without dead ends: 872 [2023-11-19 07:36:21,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:21,698 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1049 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 2980 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:21,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1700 Invalid, 3224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [244 Valid, 2980 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-19 07:36:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-11-19 07:36:21,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 534. [2023-11-19 07:36:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 414 states have (on average 1.673913043478261) internal successors, (693), 430 states have internal predecessors, (693), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-19 07:36:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 886 transitions. [2023-11-19 07:36:21,901 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 886 transitions. Word has length 86 [2023-11-19 07:36:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:21,902 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 886 transitions. [2023-11-19 07:36:21,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 07:36:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 886 transitions. [2023-11-19 07:36:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:36:21,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:21,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:21,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:21,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:21,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash 273510260, now seen corresponding path program 1 times [2023-11-19 07:36:21,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:21,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246528258] [2023-11-19 07:36:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:36:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:36:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:36:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:36:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-19 07:36:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:36:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-19 07:36:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-19 07:36:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:36:22,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:22,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246528258] [2023-11-19 07:36:22,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246528258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:22,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:22,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:36:22,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064959916] [2023-11-19 07:36:22,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:22,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:36:22,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:36:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:22,869 INFO L87 Difference]: Start difference. First operand 534 states and 886 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:36:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:32,454 INFO L93 Difference]: Finished difference Result 1408 states and 2409 transitions. [2023-11-19 07:36:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:36:32,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2023-11-19 07:36:32,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:32,466 INFO L225 Difference]: With dead ends: 1408 [2023-11-19 07:36:32,466 INFO L226 Difference]: Without dead ends: 866 [2023-11-19 07:36:32,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:36:32,473 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 2121 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 4999 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 5609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 4999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:32,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 2898 Invalid, 5609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [610 Valid, 4999 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-11-19 07:36:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-11-19 07:36:32,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2023-11-19 07:36:32,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 408 states have (on average 1.6666666666666667) internal successors, (680), 424 states have internal predecessors, (680), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-19 07:36:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 873 transitions. [2023-11-19 07:36:32,673 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 873 transitions. Word has length 87 [2023-11-19 07:36:32,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:32,674 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 873 transitions. [2023-11-19 07:36:32,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:36:32,674 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 873 transitions. [2023-11-19 07:36:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:36:32,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:32,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:32,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:32,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:32,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash 65130564, now seen corresponding path program 1 times [2023-11-19 07:36:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:32,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826939391] [2023-11-19 07:36:32,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:32,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:36:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:36:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:36:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:36:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:36:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-19 07:36:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:36:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-19 07:36:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 07:36:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:36:33,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:33,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826939391] [2023-11-19 07:36:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826939391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:33,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:33,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:36:33,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374816674] [2023-11-19 07:36:33,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:33,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:36:33,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:33,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:36:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:33,585 INFO L87 Difference]: Start difference. First operand 528 states and 873 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)