./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 19:15:15,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 19:15:15,805 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 19:15:15,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 19:15:15,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 19:15:15,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 19:15:15,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 19:15:15,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 19:15:15,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 19:15:15,841 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 19:15:15,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 19:15:15,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 19:15:15,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 19:15:15,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 19:15:15,845 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 19:15:15,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 19:15:15,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 19:15:15,845 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 19:15:15,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 19:15:15,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 19:15:15,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 19:15:15,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 19:15:15,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 19:15:15,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 19:15:15,851 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 19:15:15,851 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 19:15:15,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 19:15:15,851 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 19:15:15,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 19:15:15,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 19:15:15,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 19:15:15,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 19:15:15,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:15:15,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 19:15:15,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 19:15:15,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 19:15:15,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 19:15:15,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 19:15:15,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 19:15:15,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 19:15:15,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 19:15:15,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 19:15:15,856 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 [2024-10-12 19:15:16,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 19:15:16,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 19:15:16,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 19:15:16,152 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 19:15:16,152 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 19:15:16,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2024-10-12 19:15:17,638 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 19:15:17,923 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 19:15:17,928 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2024-10-12 19:15:17,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36233a4dc/c352a65649c946959b84324ace59bc44/FLAG2a48db725 [2024-10-12 19:15:18,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36233a4dc/c352a65649c946959b84324ace59bc44 [2024-10-12 19:15:18,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 19:15:18,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 19:15:18,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 19:15:18,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 19:15:18,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 19:15:18,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:15:18" (1/1) ... [2024-10-12 19:15:18,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a11119c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:18, skipping insertion in model container [2024-10-12 19:15:18,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:15:18" (1/1) ... [2024-10-12 19:15:18,296 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 19:15:18,848 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2024-10-12 19:15:18,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:15:18,898 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 19:15:18,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-10-12 19:15:18,910 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [412] [2024-10-12 19:15:18,911 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [532] [2024-10-12 19:15:18,911 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [567] [2024-10-12 19:15:18,912 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [755] [2024-10-12 19:15:18,912 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1426] [2024-10-12 19:15:18,912 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1518] [2024-10-12 19:15:18,913 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3108] [2024-10-12 19:15:18,913 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3117] [2024-10-12 19:15:18,913 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3130] [2024-10-12 19:15:19,005 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2024-10-12 19:15:19,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:15:19,102 INFO L204 MainTranslator]: Completed translation [2024-10-12 19:15:19,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19 WrapperNode [2024-10-12 19:15:19,103 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 19:15:19,104 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 19:15:19,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 19:15:19,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 19:15:19,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,184 INFO L138 Inliner]: procedures = 97, calls = 349, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1166 [2024-10-12 19:15:19,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 19:15:19,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 19:15:19,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 19:15:19,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 19:15:19,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,250 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-10-12 19:15:19,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 19:15:19,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 19:15:19,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 19:15:19,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 19:15:19,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (1/1) ... [2024-10-12 19:15:19,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:15:19,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:19,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 19:15:19,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 19:15:19,414 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-10-12 19:15:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-10-12 19:15:19,415 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-12 19:15:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-12 19:15:19,415 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-12 19:15:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-12 19:15:19,416 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-12 19:15:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-12 19:15:19,416 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-12 19:15:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-12 19:15:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-12 19:15:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-12 19:15:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-10-12 19:15:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-10-12 19:15:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-12 19:15:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-12 19:15:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-12 19:15:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-12 19:15:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-10-12 19:15:19,419 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-10-12 19:15:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 19:15:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-12 19:15:19,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-12 19:15:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-10-12 19:15:19,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-10-12 19:15:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-12 19:15:19,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-12 19:15:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-12 19:15:19,421 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-12 19:15:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-10-12 19:15:19,421 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-10-12 19:15:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-12 19:15:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-12 19:15:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-12 19:15:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-12 19:15:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-12 19:15:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-12 19:15:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-10-12 19:15:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-10-12 19:15:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-12 19:15:19,423 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-12 19:15:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-12 19:15:19,423 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-12 19:15:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-12 19:15:19,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-12 19:15:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-12 19:15:19,424 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-12 19:15:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 19:15:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 19:15:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 19:15:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 19:15:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 19:15:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 19:15:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-12 19:15:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-12 19:15:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-12 19:15:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-12 19:15:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-12 19:15:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-12 19:15:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-12 19:15:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 19:15:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 19:15:19,428 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-12 19:15:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-12 19:15:19,428 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-10-12 19:15:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-10-12 19:15:19,650 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 19:15:19,652 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 19:15:20,830 INFO L? ?]: Removed 463 outVars from TransFormulas that were not future-live. [2024-10-12 19:15:20,830 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 19:15:20,953 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 19:15:20,953 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 19:15:20,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:15:20 BoogieIcfgContainer [2024-10-12 19:15:20,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 19:15:20,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 19:15:20,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 19:15:20,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 19:15:20,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:15:18" (1/3) ... [2024-10-12 19:15:20,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c356286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:15:20, skipping insertion in model container [2024-10-12 19:15:20,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:19" (2/3) ... [2024-10-12 19:15:20,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c356286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:15:20, skipping insertion in model container [2024-10-12 19:15:20,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:15:20" (3/3) ... [2024-10-12 19:15:20,974 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2024-10-12 19:15:21,019 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 19:15:21,022 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 19:15:21,110 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 19:15:21,116 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;@772036f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 19:15:21,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 19:15:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 563 states, 433 states have (on average 1.71824480369515) internal successors, (744), 456 states have internal predecessors, (744), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2024-10-12 19:15:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-12 19:15:21,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:21,140 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 19:15:21,141 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:21,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:21,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2106154830, now seen corresponding path program 1 times [2024-10-12 19:15:21,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:21,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298983065] [2024-10-12 19:15:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:21,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:21,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:21,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:15:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:22,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-12 19:15:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:22,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:22,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:15:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:22,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 19:15:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:22,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:22,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:22,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:15:22,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:22,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298983065] [2024-10-12 19:15:22,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298983065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:22,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:15:22,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 19:15:22,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48601423] [2024-10-12 19:15:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:22,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 19:15:22,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:22,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 19:15:22,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:15:22,576 INFO L87 Difference]: Start difference. First operand has 563 states, 433 states have (on average 1.71824480369515) internal successors, (744), 456 states have internal predecessors, (744), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:27,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:27,854 INFO L93 Difference]: Finished difference Result 1282 states and 2186 transitions. [2024-10-12 19:15:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 19:15:27,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2024-10-12 19:15:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:27,883 INFO L225 Difference]: With dead ends: 1282 [2024-10-12 19:15:27,884 INFO L226 Difference]: Without dead ends: 719 [2024-10-12 19:15:27,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:15:27,899 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 1130 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 3104 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 3104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:27,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 673 Invalid, 3384 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [280 Valid, 3104 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-10-12 19:15:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-10-12 19:15:28,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 559. [2024-10-12 19:15:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 431 states have (on average 1.7076566125290022) internal successors, (736), 452 states have internal predecessors, (736), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-12 19:15:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 935 transitions. [2024-10-12 19:15:28,079 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 935 transitions. Word has length 72 [2024-10-12 19:15:28,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:28,080 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 935 transitions. [2024-10-12 19:15:28,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:28,081 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 935 transitions. [2024-10-12 19:15:28,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 19:15:28,088 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:28,088 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:28,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 19:15:28,089 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:28,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1397801702, now seen corresponding path program 1 times [2024-10-12 19:15:28,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:28,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976107813] [2024-10-12 19:15:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:15:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-12 19:15:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 19:15:28,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:28,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976107813] [2024-10-12 19:15:28,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976107813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:28,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:15:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 19:15:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369428786] [2024-10-12 19:15:28,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:28,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 19:15:28,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:28,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 19:15:28,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:15:28,841 INFO L87 Difference]: Start difference. First operand 559 states and 935 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:33,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:33,207 INFO L93 Difference]: Finished difference Result 1275 states and 2158 transitions. [2024-10-12 19:15:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 19:15:33,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2024-10-12 19:15:33,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:33,214 INFO L225 Difference]: With dead ends: 1275 [2024-10-12 19:15:33,215 INFO L226 Difference]: Without dead ends: 719 [2024-10-12 19:15:33,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:15:33,219 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 1131 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3061 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 3061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:33,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 666 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 3061 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-12 19:15:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-10-12 19:15:33,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 559. [2024-10-12 19:15:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 431 states have (on average 1.705336426914153) internal successors, (735), 452 states have internal predecessors, (735), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-12 19:15:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 934 transitions. [2024-10-12 19:15:33,374 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 934 transitions. Word has length 75 [2024-10-12 19:15:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:33,375 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 934 transitions. [2024-10-12 19:15:33,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 934 transitions. [2024-10-12 19:15:33,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 19:15:33,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:33,378 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:33,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 19:15:33,379 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:33,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:33,379 INFO L85 PathProgramCache]: Analyzing trace with hash -302012626, now seen corresponding path program 1 times [2024-10-12 19:15:33,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:33,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007203685] [2024-10-12 19:15:33,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:33,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:15:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-12 19:15:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 19:15:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:33,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007203685] [2024-10-12 19:15:33,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007203685] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830282587] [2024-10-12 19:15:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:33,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:33,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:33,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:33,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 19:15:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:34,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:34,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:15:34,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830282587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:34,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:34,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-12 19:15:34,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078089516] [2024-10-12 19:15:34,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:34,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:34,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:34,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:34,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:15:34,392 INFO L87 Difference]: Start difference. First operand 559 states and 934 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:34,580 INFO L93 Difference]: Finished difference Result 1122 states and 1875 transitions. [2024-10-12 19:15:34,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:34,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2024-10-12 19:15:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:34,586 INFO L225 Difference]: With dead ends: 1122 [2024-10-12 19:15:34,586 INFO L226 Difference]: Without dead ends: 568 [2024-10-12 19:15:34,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:34,590 INFO L432 NwaCegarLoop]: 909 mSDtfsCounter, 13 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:34,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2721 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-10-12 19:15:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-10-12 19:15:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 439 states have (on average 1.7015945330296127) internal successors, (747), 460 states have internal predecessors, (747), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-12 19:15:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 946 transitions. [2024-10-12 19:15:34,690 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 946 transitions. Word has length 77 [2024-10-12 19:15:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:34,690 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 946 transitions. [2024-10-12 19:15:34,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 946 transitions. [2024-10-12 19:15:34,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 19:15:34,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:34,693 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:34,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 19:15:34,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:34,894 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:34,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1307695335, now seen corresponding path program 1 times [2024-10-12 19:15:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:34,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939308315] [2024-10-12 19:15:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 19:15:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 19:15:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 19:15:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 19:15:35,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:35,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939308315] [2024-10-12 19:15:35,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939308315] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:35,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061491989] [2024-10-12 19:15:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:35,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:35,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:35,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:35,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 19:15:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:35,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:15:35,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:35,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061491989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-12 19:15:35,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28254055] [2024-10-12 19:15:35,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:35,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:35,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:15:35,954 INFO L87 Difference]: Start difference. First operand 568 states and 946 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:36,139 INFO L93 Difference]: Finished difference Result 1124 states and 1876 transitions. [2024-10-12 19:15:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2024-10-12 19:15:36,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:36,143 INFO L225 Difference]: With dead ends: 1124 [2024-10-12 19:15:36,144 INFO L226 Difference]: Without dead ends: 568 [2024-10-12 19:15:36,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:36,148 INFO L432 NwaCegarLoop]: 909 mSDtfsCounter, 11 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:36,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2721 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-10-12 19:15:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-10-12 19:15:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 439 states have (on average 1.6993166287015946) internal successors, (746), 460 states have internal predecessors, (746), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-12 19:15:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 945 transitions. [2024-10-12 19:15:36,243 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 945 transitions. Word has length 78 [2024-10-12 19:15:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:36,244 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 945 transitions. [2024-10-12 19:15:36,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 945 transitions. [2024-10-12 19:15:36,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-12 19:15:36,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:36,246 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:36,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 19:15:36,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-12 19:15:36,448 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:36,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:36,448 INFO L85 PathProgramCache]: Analyzing trace with hash 890626706, now seen corresponding path program 1 times [2024-10-12 19:15:36,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:36,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635048981] [2024-10-12 19:15:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:36,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:36,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:36,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:36,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:36,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-12 19:15:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:36,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:36,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 19:15:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 19:15:37,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:37,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635048981] [2024-10-12 19:15:37,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635048981] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:37,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50122778] [2024-10-12 19:15:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:37,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:37,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:37,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 19:15:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:37,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:15:37,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:37,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50122778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:37,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:37,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-12 19:15:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544209243] [2024-10-12 19:15:37,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:37,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:37,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:15:37,447 INFO L87 Difference]: Start difference. First operand 568 states and 945 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:37,630 INFO L93 Difference]: Finished difference Result 1124 states and 1875 transitions. [2024-10-12 19:15:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:37,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2024-10-12 19:15:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:37,635 INFO L225 Difference]: With dead ends: 1124 [2024-10-12 19:15:37,635 INFO L226 Difference]: Without dead ends: 568 [2024-10-12 19:15:37,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:37,640 INFO L432 NwaCegarLoop]: 909 mSDtfsCounter, 10 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:37,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2721 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-10-12 19:15:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-10-12 19:15:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 439 states have (on average 1.6970387243735763) internal successors, (745), 460 states have internal predecessors, (745), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-12 19:15:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 944 transitions. [2024-10-12 19:15:37,722 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 944 transitions. Word has length 79 [2024-10-12 19:15:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:37,722 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 944 transitions. [2024-10-12 19:15:37,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 944 transitions. [2024-10-12 19:15:37,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-12 19:15:37,725 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:37,725 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:37,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 19:15:37,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:37,926 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:37,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash -666119107, now seen corresponding path program 1 times [2024-10-12 19:15:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:37,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386479998] [2024-10-12 19:15:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:37,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:15:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:15:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 19:15:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:38,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386479998] [2024-10-12 19:15:38,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386479998] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:38,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389189784] [2024-10-12 19:15:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:38,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:38,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:38,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:38,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 19:15:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:38,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:38,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:38,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:38,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389189784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:38,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:38,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-12 19:15:38,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472909162] [2024-10-12 19:15:38,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:38,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:38,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:15:38,959 INFO L87 Difference]: Start difference. First operand 568 states and 944 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:39,196 INFO L93 Difference]: Finished difference Result 1148 states and 1920 transitions. [2024-10-12 19:15:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:15:39,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2024-10-12 19:15:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:39,201 INFO L225 Difference]: With dead ends: 1148 [2024-10-12 19:15:39,202 INFO L226 Difference]: Without dead ends: 582 [2024-10-12 19:15:39,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:15:39,205 INFO L432 NwaCegarLoop]: 882 mSDtfsCounter, 75 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:39,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2608 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-10-12 19:15:39,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 568. [2024-10-12 19:15:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 439 states have (on average 1.6856492027334853) internal successors, (740), 460 states have internal predecessors, (740), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-12 19:15:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 939 transitions. [2024-10-12 19:15:39,312 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 939 transitions. Word has length 80 [2024-10-12 19:15:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:39,312 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 939 transitions. [2024-10-12 19:15:39,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 939 transitions. [2024-10-12 19:15:39,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-12 19:15:39,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:39,316 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:39,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 19:15:39,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:39,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:39,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:39,517 INFO L85 PathProgramCache]: Analyzing trace with hash -395798417, now seen corresponding path program 1 times [2024-10-12 19:15:39,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:39,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141777547] [2024-10-12 19:15:39,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:39,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 19:15:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:40,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-12 19:15:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:40,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:40,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:40,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:40,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:40,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141777547] [2024-10-12 19:15:40,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141777547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:40,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197448704] [2024-10-12 19:15:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:40,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:40,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:40,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:40,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 19:15:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:40,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:40,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:40,464 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:40,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197448704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:40,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:40,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-12 19:15:40,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885773605] [2024-10-12 19:15:40,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:40,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:40,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:40,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:15:40,466 INFO L87 Difference]: Start difference. First operand 568 states and 939 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:40,675 INFO L93 Difference]: Finished difference Result 1148 states and 1910 transitions. [2024-10-12 19:15:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:15:40,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2024-10-12 19:15:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:40,680 INFO L225 Difference]: With dead ends: 1148 [2024-10-12 19:15:40,680 INFO L226 Difference]: Without dead ends: 582 [2024-10-12 19:15:40,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:15:40,684 INFO L432 NwaCegarLoop]: 882 mSDtfsCounter, 74 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:40,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2608 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:40,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-10-12 19:15:40,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 568. [2024-10-12 19:15:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 439 states have (on average 1.674259681093394) internal successors, (735), 460 states have internal predecessors, (735), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-12 19:15:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 934 transitions. [2024-10-12 19:15:40,766 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 934 transitions. Word has length 82 [2024-10-12 19:15:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:40,766 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 934 transitions. [2024-10-12 19:15:40,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 934 transitions. [2024-10-12 19:15:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-12 19:15:40,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:40,768 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:40,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 19:15:40,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:40,969 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:40,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash -671062541, now seen corresponding path program 1 times [2024-10-12 19:15:40,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:40,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380342484] [2024-10-12 19:15:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:40,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-12 19:15:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 19:15:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:41,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:41,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380342484] [2024-10-12 19:15:41,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380342484] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:41,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650988158] [2024-10-12 19:15:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:41,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:41,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:41,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:41,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 19:15:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:41,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:41,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:41,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650988158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:41,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:41,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-12 19:15:41,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366807278] [2024-10-12 19:15:41,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:41,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:41,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:41,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:15:41,954 INFO L87 Difference]: Start difference. First operand 568 states and 934 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:42,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:42,178 INFO L93 Difference]: Finished difference Result 1198 states and 1982 transitions. [2024-10-12 19:15:42,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:42,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-10-12 19:15:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:42,183 INFO L225 Difference]: With dead ends: 1198 [2024-10-12 19:15:42,183 INFO L226 Difference]: Without dead ends: 646 [2024-10-12 19:15:42,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:42,186 INFO L432 NwaCegarLoop]: 913 mSDtfsCounter, 129 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:42,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2637 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-10-12 19:15:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 618. [2024-10-12 19:15:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 488 states have (on average 1.6782786885245902) internal successors, (819), 509 states have internal predecessors, (819), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-12 19:15:42,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1018 transitions. [2024-10-12 19:15:42,299 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1018 transitions. Word has length 84 [2024-10-12 19:15:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:42,299 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1018 transitions. [2024-10-12 19:15:42,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1018 transitions. [2024-10-12 19:15:42,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 19:15:42,301 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:42,301 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:42,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 19:15:42,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:42,502 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:42,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1466907314, now seen corresponding path program 1 times [2024-10-12 19:15:42,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:42,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463085189] [2024-10-12 19:15:42,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:42,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 19:15:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:43,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:43,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463085189] [2024-10-12 19:15:43,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463085189] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:43,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188194215] [2024-10-12 19:15:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:43,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:43,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:43,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:43,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 19:15:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:43,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:43,491 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:43,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188194215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:43,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:43,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-12 19:15:43,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302004257] [2024-10-12 19:15:43,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:43,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:43,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:43,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:43,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:15:43,494 INFO L87 Difference]: Start difference. First operand 618 states and 1018 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:43,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:43,864 INFO L93 Difference]: Finished difference Result 1212 states and 2005 transitions. [2024-10-12 19:15:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:43,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2024-10-12 19:15:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:43,871 INFO L225 Difference]: With dead ends: 1212 [2024-10-12 19:15:43,871 INFO L226 Difference]: Without dead ends: 646 [2024-10-12 19:15:43,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:43,875 INFO L432 NwaCegarLoop]: 912 mSDtfsCounter, 123 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:43,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 2612 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:15:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-10-12 19:15:43,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 618. [2024-10-12 19:15:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 488 states have (on average 1.6680327868852458) internal successors, (814), 509 states have internal predecessors, (814), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-10-12 19:15:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1013 transitions. [2024-10-12 19:15:43,992 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1013 transitions. Word has length 85 [2024-10-12 19:15:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:43,993 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1013 transitions. [2024-10-12 19:15:43,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:43,993 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1013 transitions. [2024-10-12 19:15:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 19:15:43,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:43,994 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 19:15:44,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 19:15:44,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:44,196 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:44,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1675776335, now seen corresponding path program 1 times [2024-10-12 19:15:44,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:44,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122605420] [2024-10-12 19:15:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 19:15:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:45,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:45,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122605420] [2024-10-12 19:15:45,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122605420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:45,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066441055] [2024-10-12 19:15:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:45,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:45,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:45,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:45,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 19:15:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:15:45,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:45,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:45,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066441055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:45,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:45,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 20 [2024-10-12 19:15:45,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832143712] [2024-10-12 19:15:45,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:45,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:15:45,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:45,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:15:45,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-10-12 19:15:45,429 INFO L87 Difference]: Start difference. First operand 618 states and 1013 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:45,653 INFO L93 Difference]: Finished difference Result 1206 states and 1986 transitions. [2024-10-12 19:15:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:15:45,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2024-10-12 19:15:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:45,659 INFO L225 Difference]: With dead ends: 1206 [2024-10-12 19:15:45,659 INFO L226 Difference]: Without dead ends: 654 [2024-10-12 19:15:45,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2024-10-12 19:15:45,662 INFO L432 NwaCegarLoop]: 890 mSDtfsCounter, 113 mSDsluCounter, 5252 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6142 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:45,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6142 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:45,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2024-10-12 19:15:45,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 636. [2024-10-12 19:15:45,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 503 states have (on average 1.6679920477137178) internal successors, (839), 526 states have internal predecessors, (839), 103 states have call successors, (103), 28 states have call predecessors, (103), 29 states have return successors, (100), 95 states have call predecessors, (100), 98 states have call successors, (100) [2024-10-12 19:15:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1042 transitions. [2024-10-12 19:15:45,750 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1042 transitions. Word has length 85 [2024-10-12 19:15:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:45,751 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1042 transitions. [2024-10-12 19:15:45,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1042 transitions. [2024-10-12 19:15:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 19:15:45,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:45,752 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 19:15:45,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 19:15:45,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 19:15:45,953 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:45,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1232164912, now seen corresponding path program 1 times [2024-10-12 19:15:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:45,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406398496] [2024-10-12 19:15:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 19:15:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:15:46,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406398496] [2024-10-12 19:15:46,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406398496] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107202961] [2024-10-12 19:15:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:46,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:46,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:46,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:46,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 19:15:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:15:46,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:46,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:46,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107202961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:46,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:46,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-12 19:15:46,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487215802] [2024-10-12 19:15:46,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:46,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:15:46,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:15:46,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:15:46,942 INFO L87 Difference]: Start difference. First operand 636 states and 1042 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:47,187 INFO L93 Difference]: Finished difference Result 1144 states and 1886 transitions. [2024-10-12 19:15:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:15:47,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2024-10-12 19:15:47,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:47,193 INFO L225 Difference]: With dead ends: 1144 [2024-10-12 19:15:47,193 INFO L226 Difference]: Without dead ends: 658 [2024-10-12 19:15:47,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:47,196 INFO L432 NwaCegarLoop]: 903 mSDtfsCounter, 86 mSDsluCounter, 4436 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5339 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:47,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5339 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-10-12 19:15:47,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 654. [2024-10-12 19:15:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 518 states have (on average 1.667953667953668) internal successors, (864), 543 states have internal predecessors, (864), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-12 19:15:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1071 transitions. [2024-10-12 19:15:47,300 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1071 transitions. Word has length 85 [2024-10-12 19:15:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:47,301 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1071 transitions. [2024-10-12 19:15:47,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1071 transitions. [2024-10-12 19:15:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 19:15:47,302 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:47,303 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 19:15:47,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 19:15:47,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:47,504 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:47,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1114094992, now seen corresponding path program 1 times [2024-10-12 19:15:47,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:47,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248160105] [2024-10-12 19:15:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:47,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-12 19:15:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 19:15:48,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:48,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248160105] [2024-10-12 19:15:48,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248160105] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:48,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571080900] [2024-10-12 19:15:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:48,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:48,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:48,095 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:48,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 19:15:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:15:48,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:48,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:48,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571080900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:48,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:48,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-10-12 19:15:48,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470825119] [2024-10-12 19:15:48,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:48,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:15:48,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:48,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:15:48,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:15:48,466 INFO L87 Difference]: Start difference. First operand 654 states and 1071 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:48,659 INFO L93 Difference]: Finished difference Result 1172 states and 1935 transitions. [2024-10-12 19:15:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:15:48,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2024-10-12 19:15:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:48,667 INFO L225 Difference]: With dead ends: 1172 [2024-10-12 19:15:48,667 INFO L226 Difference]: Without dead ends: 686 [2024-10-12 19:15:48,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:15:48,670 INFO L432 NwaCegarLoop]: 903 mSDtfsCounter, 95 mSDsluCounter, 4426 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5329 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:48,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5329 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-10-12 19:15:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 654. [2024-10-12 19:15:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 518 states have (on average 1.667953667953668) internal successors, (864), 543 states have internal predecessors, (864), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-12 19:15:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1071 transitions. [2024-10-12 19:15:48,793 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1071 transitions. Word has length 86 [2024-10-12 19:15:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:48,793 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1071 transitions. [2024-10-12 19:15:48,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1071 transitions. [2024-10-12 19:15:48,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 19:15:48,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:48,796 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:48,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 19:15:48,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 19:15:48,997 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:48,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -490916368, now seen corresponding path program 1 times [2024-10-12 19:15:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:48,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22571435] [2024-10-12 19:15:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-12 19:15:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:15:49,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:49,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22571435] [2024-10-12 19:15:49,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22571435] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:49,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080335777] [2024-10-12 19:15:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:49,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:49,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:49,532 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:49,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 19:15:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:15:49,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:49,940 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:49,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080335777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:49,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:49,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2024-10-12 19:15:49,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204222553] [2024-10-12 19:15:49,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:49,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:15:49,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:49,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:15:49,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:49,942 INFO L87 Difference]: Start difference. First operand 654 states and 1071 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:50,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:50,213 INFO L93 Difference]: Finished difference Result 1158 states and 1910 transitions. [2024-10-12 19:15:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:15:50,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2024-10-12 19:15:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:50,218 INFO L225 Difference]: With dead ends: 1158 [2024-10-12 19:15:50,218 INFO L226 Difference]: Without dead ends: 672 [2024-10-12 19:15:50,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:15:50,221 INFO L432 NwaCegarLoop]: 892 mSDtfsCounter, 113 mSDsluCounter, 5258 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6150 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:50,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6150 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:15:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-10-12 19:15:50,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 654. [2024-10-12 19:15:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 518 states have (on average 1.667953667953668) internal successors, (864), 543 states have internal predecessors, (864), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-12 19:15:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1071 transitions. [2024-10-12 19:15:50,391 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1071 transitions. Word has length 86 [2024-10-12 19:15:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:50,391 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1071 transitions. [2024-10-12 19:15:50,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1071 transitions. [2024-10-12 19:15:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 19:15:50,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:50,393 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 19:15:50,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 19:15:50,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 19:15:50,594 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:50,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:50,595 INFO L85 PathProgramCache]: Analyzing trace with hash -728630363, now seen corresponding path program 1 times [2024-10-12 19:15:50,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:50,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104808313] [2024-10-12 19:15:50,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:50,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 19:15:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-12 19:15:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 19:15:51,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:51,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104808313] [2024-10-12 19:15:51,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104808313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:51,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414152188] [2024-10-12 19:15:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:51,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:51,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:51,271 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:51,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 19:15:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:51,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 19:15:51,618 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:51,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414152188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:51,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:51,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-12 19:15:51,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808762007] [2024-10-12 19:15:51,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:51,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:51,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:15:51,619 INFO L87 Difference]: Start difference. First operand 654 states and 1071 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:51,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:51,764 INFO L93 Difference]: Finished difference Result 1210 states and 1995 transitions. [2024-10-12 19:15:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:51,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-10-12 19:15:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:51,769 INFO L225 Difference]: With dead ends: 1210 [2024-10-12 19:15:51,769 INFO L226 Difference]: Without dead ends: 654 [2024-10-12 19:15:51,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:51,772 INFO L432 NwaCegarLoop]: 898 mSDtfsCounter, 13 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:51,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2690 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2024-10-12 19:15:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2024-10-12 19:15:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 518 states have (on average 1.6602316602316602) internal successors, (860), 543 states have internal predecessors, (860), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-12 19:15:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1067 transitions. [2024-10-12 19:15:51,896 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1067 transitions. Word has length 86 [2024-10-12 19:15:51,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:51,897 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1067 transitions. [2024-10-12 19:15:51,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:51,897 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1067 transitions. [2024-10-12 19:15:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-12 19:15:51,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:51,898 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:51,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 19:15:52,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 19:15:52,099 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:52,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:52,100 INFO L85 PathProgramCache]: Analyzing trace with hash -289784392, now seen corresponding path program 1 times [2024-10-12 19:15:52,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:52,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199898625] [2024-10-12 19:15:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:52,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-12 19:15:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:15:52,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:52,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199898625] [2024-10-12 19:15:52,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199898625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354468094] [2024-10-12 19:15:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:52,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:52,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:52,626 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:52,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 19:15:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 19:15:52,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:15:52,932 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354468094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:52,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:52,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-12 19:15:52,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704384368] [2024-10-12 19:15:52,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:52,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:52,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:52,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:15:52,935 INFO L87 Difference]: Start difference. First operand 654 states and 1067 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:53,070 INFO L93 Difference]: Finished difference Result 1252 states and 2061 transitions. [2024-10-12 19:15:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:15:53,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2024-10-12 19:15:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:53,075 INFO L225 Difference]: With dead ends: 1252 [2024-10-12 19:15:53,075 INFO L226 Difference]: Without dead ends: 678 [2024-10-12 19:15:53,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:15:53,078 INFO L432 NwaCegarLoop]: 892 mSDtfsCounter, 7 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:53,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2665 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-10-12 19:15:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 678. [2024-10-12 19:15:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 542 states have (on average 1.6383763837638377) internal successors, (888), 567 states have internal predecessors, (888), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-12 19:15:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1095 transitions. [2024-10-12 19:15:53,193 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1095 transitions. Word has length 87 [2024-10-12 19:15:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:53,194 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 1095 transitions. [2024-10-12 19:15:53,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:15:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1095 transitions. [2024-10-12 19:15:53,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-12 19:15:53,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:53,196 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:53,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 19:15:53,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 19:15:53,397 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:53,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash 329420538, now seen corresponding path program 1 times [2024-10-12 19:15:53,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568778858] [2024-10-12 19:15:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:53,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:15:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 19:15:53,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:53,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568778858] [2024-10-12 19:15:53,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568778858] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:53,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545965190] [2024-10-12 19:15:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:53,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:53,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:53,957 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:53,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 19:15:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:15:54,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:54,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:54,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545965190] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:54,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:54,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-10-12 19:15:54,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797134397] [2024-10-12 19:15:54,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:54,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:15:54,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:54,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:15:54,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:15:54,320 INFO L87 Difference]: Start difference. First operand 678 states and 1095 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:54,535 INFO L93 Difference]: Finished difference Result 1188 states and 1942 transitions. [2024-10-12 19:15:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:15:54,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2024-10-12 19:15:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:54,541 INFO L225 Difference]: With dead ends: 1188 [2024-10-12 19:15:54,542 INFO L226 Difference]: Without dead ends: 702 [2024-10-12 19:15:54,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-10-12 19:15:54,544 INFO L432 NwaCegarLoop]: 886 mSDtfsCounter, 119 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6106 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:54,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6106 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:54,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-10-12 19:15:54,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 678. [2024-10-12 19:15:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 542 states have (on average 1.6383763837638377) internal successors, (888), 567 states have internal predecessors, (888), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-10-12 19:15:54,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1095 transitions. [2024-10-12 19:15:54,665 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1095 transitions. Word has length 88 [2024-10-12 19:15:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:54,665 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 1095 transitions. [2024-10-12 19:15:54,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:54,666 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1095 transitions. [2024-10-12 19:15:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-12 19:15:54,667 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:54,667 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:54,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-12 19:15:54,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:54,868 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:54,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:54,868 INFO L85 PathProgramCache]: Analyzing trace with hash -470558838, now seen corresponding path program 1 times [2024-10-12 19:15:54,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:54,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585416502] [2024-10-12 19:15:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:54,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:15:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:15:55,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:55,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585416502] [2024-10-12 19:15:55,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585416502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:55,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874514710] [2024-10-12 19:15:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:55,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:55,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:55,429 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:55,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 19:15:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:15:55,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:15:56,004 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:56,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874514710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:56,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:56,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-10-12 19:15:56,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161406967] [2024-10-12 19:15:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:56,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:15:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:15:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:15:56,006 INFO L87 Difference]: Start difference. First operand 678 states and 1095 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:58,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:58,612 INFO L93 Difference]: Finished difference Result 2211 states and 3680 transitions. [2024-10-12 19:15:58,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:15:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2024-10-12 19:15:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:58,625 INFO L225 Difference]: With dead ends: 2211 [2024-10-12 19:15:58,625 INFO L226 Difference]: Without dead ends: 1730 [2024-10-12 19:15:58,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:15:58,628 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 3381 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 3827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:58,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3564 Valid, 1457 Invalid, 3827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 3137 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 19:15:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2024-10-12 19:15:58,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1543. [2024-10-12 19:15:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1218 states have (on average 1.6748768472906403) internal successors, (2040), 1261 states have internal predecessors, (2040), 259 states have call successors, (259), 60 states have call predecessors, (259), 65 states have return successors, (268), 236 states have call predecessors, (268), 254 states have call successors, (268) [2024-10-12 19:15:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2567 transitions. [2024-10-12 19:15:58,880 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2567 transitions. Word has length 88 [2024-10-12 19:15:58,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:58,881 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 2567 transitions. [2024-10-12 19:15:58,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-12 19:15:58,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2567 transitions. [2024-10-12 19:15:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-12 19:15:58,888 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:58,888 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:58,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-12 19:15:59,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 19:15:59,089 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:59,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1313924825, now seen corresponding path program 1 times [2024-10-12 19:15:59,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:59,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477982090] [2024-10-12 19:15:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:59,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:15:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 19:15:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 19:15:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 19:15:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 19:15:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 19:15:59,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:59,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477982090] [2024-10-12 19:15:59,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477982090] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:59,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996462407] [2024-10-12 19:15:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:59,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:59,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:59,980 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:15:59,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 19:16:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:00,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 2074 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:16:00,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-12 19:16:00,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996462407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:00,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:00,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-12 19:16:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929689531] [2024-10-12 19:16:00,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:00,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:16:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:00,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:16:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-10-12 19:16:00,487 INFO L87 Difference]: Start difference. First operand 1543 states and 2567 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-12 19:16:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:03,309 INFO L93 Difference]: Finished difference Result 4112 states and 6897 transitions. [2024-10-12 19:16:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 19:16:03,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 138 [2024-10-12 19:16:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:03,327 INFO L225 Difference]: With dead ends: 4112 [2024-10-12 19:16:03,327 INFO L226 Difference]: Without dead ends: 2608 [2024-10-12 19:16:03,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-10-12 19:16:03,335 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 1704 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 5212 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 5474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 5212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:03,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1798 Valid, 1933 Invalid, 5474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 5212 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 19:16:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2024-10-12 19:16:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2396. [2024-10-12 19:16:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 1862 states have (on average 1.6578947368421053) internal successors, (3087), 1914 states have internal predecessors, (3087), 425 states have call successors, (425), 89 states have call predecessors, (425), 108 states have return successors, (468), 403 states have call predecessors, (468), 420 states have call successors, (468) [2024-10-12 19:16:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3980 transitions. [2024-10-12 19:16:03,735 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3980 transitions. Word has length 138 [2024-10-12 19:16:03,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:03,736 INFO L471 AbstractCegarLoop]: Abstraction has 2396 states and 3980 transitions. [2024-10-12 19:16:03,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-12 19:16:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3980 transitions. [2024-10-12 19:16:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-12 19:16:03,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:03,741 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:03,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 19:16:03,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 19:16:03,942 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:03,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1227604761, now seen corresponding path program 1 times [2024-10-12 19:16:03,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:03,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192123089] [2024-10-12 19:16:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:16:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:16:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 19:16:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 19:16:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 19:16:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 19:16:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192123089] [2024-10-12 19:16:04,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192123089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024398310] [2024-10-12 19:16:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:04,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:04,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:04,746 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:16:04,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 19:16:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:05,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 2071 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 19:16:05,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 19:16:05,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:05,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024398310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:05,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:05,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2024-10-12 19:16:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997549743] [2024-10-12 19:16:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:05,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:16:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:16:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:16:05,240 INFO L87 Difference]: Start difference. First operand 2396 states and 3980 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:05,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:05,987 INFO L93 Difference]: Finished difference Result 4643 states and 7890 transitions. [2024-10-12 19:16:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 19:16:05,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 139 [2024-10-12 19:16:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:06,003 INFO L225 Difference]: With dead ends: 4643 [2024-10-12 19:16:06,003 INFO L226 Difference]: Without dead ends: 2444 [2024-10-12 19:16:06,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:16:06,016 INFO L432 NwaCegarLoop]: 890 mSDtfsCounter, 873 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:06,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 2280 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:16:06,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2024-10-12 19:16:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2444. [2024-10-12 19:16:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 1904 states have (on average 1.659138655462185) internal successors, (3159), 1956 states have internal predecessors, (3159), 425 states have call successors, (425), 95 states have call predecessors, (425), 114 states have return successors, (473), 403 states have call predecessors, (473), 420 states have call successors, (473) [2024-10-12 19:16:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 4057 transitions. [2024-10-12 19:16:06,439 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 4057 transitions. Word has length 139 [2024-10-12 19:16:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:06,440 INFO L471 AbstractCegarLoop]: Abstraction has 2444 states and 4057 transitions. [2024-10-12 19:16:06,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 4057 transitions. [2024-10-12 19:16:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-12 19:16:06,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:06,445 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:06,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-12 19:16:06,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:06,646 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:06,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1092394865, now seen corresponding path program 1 times [2024-10-12 19:16:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:06,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449677399] [2024-10-12 19:16:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:06,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:16:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:16:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:16:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-12 19:16:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:16:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 19:16:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 19:16:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 19:16:07,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449677399] [2024-10-12 19:16:07,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449677399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640636910] [2024-10-12 19:16:07,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:07,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:07,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:07,345 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:16:07,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 19:16:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 2073 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 19:16:07,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 19:16:07,795 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:07,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640636910] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:07,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:07,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2024-10-12 19:16:07,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426096455] [2024-10-12 19:16:07,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:07,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:16:07,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:07,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:16:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:16:07,797 INFO L87 Difference]: Start difference. First operand 2444 states and 4057 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:08,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:08,484 INFO L93 Difference]: Finished difference Result 4739 states and 8028 transitions. [2024-10-12 19:16:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 19:16:08,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2024-10-12 19:16:08,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:08,497 INFO L225 Difference]: With dead ends: 4739 [2024-10-12 19:16:08,498 INFO L226 Difference]: Without dead ends: 2492 [2024-10-12 19:16:08,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:16:08,509 INFO L432 NwaCegarLoop]: 887 mSDtfsCounter, 867 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:08,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2277 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:16:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2024-10-12 19:16:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2492. [2024-10-12 19:16:08,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 1946 states have (on average 1.6603288797533402) internal successors, (3231), 1998 states have internal predecessors, (3231), 425 states have call successors, (425), 101 states have call predecessors, (425), 120 states have return successors, (478), 403 states have call predecessors, (478), 420 states have call successors, (478) [2024-10-12 19:16:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 4134 transitions. [2024-10-12 19:16:08,866 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 4134 transitions. Word has length 141 [2024-10-12 19:16:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:08,866 INFO L471 AbstractCegarLoop]: Abstraction has 2492 states and 4134 transitions. [2024-10-12 19:16:08,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 4134 transitions. [2024-10-12 19:16:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-12 19:16:08,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:08,872 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:08,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-12 19:16:09,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:09,073 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:09,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash 339302247, now seen corresponding path program 1 times [2024-10-12 19:16:09,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:09,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464210710] [2024-10-12 19:16:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:09,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:16:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:16:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 19:16:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-12 19:16:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 19:16:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-12 19:16:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-12 19:16:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 19:16:09,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:09,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464210710] [2024-10-12 19:16:09,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464210710] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:09,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310097454] [2024-10-12 19:16:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:09,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:09,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:09,798 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:16:09,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 19:16:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 19:16:10,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 19:16:10,274 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:10,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310097454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:10,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:10,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2024-10-12 19:16:10,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083701206] [2024-10-12 19:16:10,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:10,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:16:10,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:16:10,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:16:10,276 INFO L87 Difference]: Start difference. First operand 2492 states and 4134 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:11,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:11,100 INFO L93 Difference]: Finished difference Result 4835 states and 8166 transitions. [2024-10-12 19:16:11,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 19:16:11,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2024-10-12 19:16:11,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:11,113 INFO L225 Difference]: With dead ends: 4835 [2024-10-12 19:16:11,113 INFO L226 Difference]: Without dead ends: 2540 [2024-10-12 19:16:11,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:16:11,122 INFO L432 NwaCegarLoop]: 884 mSDtfsCounter, 848 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:11,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2274 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:16:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2024-10-12 19:16:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2540. [2024-10-12 19:16:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 1988 states have (on average 1.6614688128772637) internal successors, (3303), 2040 states have internal predecessors, (3303), 425 states have call successors, (425), 107 states have call predecessors, (425), 126 states have return successors, (483), 403 states have call predecessors, (483), 420 states have call successors, (483) [2024-10-12 19:16:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 4211 transitions. [2024-10-12 19:16:11,452 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 4211 transitions. Word has length 143 [2024-10-12 19:16:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:11,452 INFO L471 AbstractCegarLoop]: Abstraction has 2540 states and 4211 transitions. [2024-10-12 19:16:11,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 4211 transitions. [2024-10-12 19:16:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-12 19:16:11,457 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:11,457 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:11,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-12 19:16:11,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:11,658 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:11,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash -299379463, now seen corresponding path program 1 times [2024-10-12 19:16:11,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:11,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026897882] [2024-10-12 19:16:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:11,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:11,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:11,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:11,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:11,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:16:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:11,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:11,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:16:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 19:16:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:16:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 19:16:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 19:16:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-12 19:16:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 19:16:12,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:12,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026897882] [2024-10-12 19:16:12,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026897882] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:12,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122785382] [2024-10-12 19:16:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:12,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:12,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:12,530 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:16:12,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 19:16:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 19:16:12,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 19:16:12,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:12,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122785382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:12,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:12,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2024-10-12 19:16:12,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392539384] [2024-10-12 19:16:12,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:12,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:16:12,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:12,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:16:12,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:16:12,999 INFO L87 Difference]: Start difference. First operand 2540 states and 4211 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:13,637 INFO L93 Difference]: Finished difference Result 4931 states and 8304 transitions. [2024-10-12 19:16:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 19:16:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2024-10-12 19:16:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:13,656 INFO L225 Difference]: With dead ends: 4931 [2024-10-12 19:16:13,657 INFO L226 Difference]: Without dead ends: 2588 [2024-10-12 19:16:13,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:16:13,670 INFO L432 NwaCegarLoop]: 881 mSDtfsCounter, 839 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:13,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 2271 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:16:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2024-10-12 19:16:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2588. [2024-10-12 19:16:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2588 states, 2030 states have (on average 1.6625615763546797) internal successors, (3375), 2082 states have internal predecessors, (3375), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2024-10-12 19:16:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 4288 transitions. [2024-10-12 19:16:14,125 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 4288 transitions. Word has length 145 [2024-10-12 19:16:14,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:14,126 INFO L471 AbstractCegarLoop]: Abstraction has 2588 states and 4288 transitions. [2024-10-12 19:16:14,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:14,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 4288 transitions. [2024-10-12 19:16:14,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-12 19:16:14,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:14,130 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:14,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-12 19:16:14,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-12 19:16:14,331 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:14,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:14,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1038064665, now seen corresponding path program 1 times [2024-10-12 19:16:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:14,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765122431] [2024-10-12 19:16:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:14,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:14,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:14,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:14,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:16:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:14,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:14,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:14,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:16:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:14,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:14,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:16:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:16:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:16:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 19:16:15,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765122431] [2024-10-12 19:16:15,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765122431] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095497813] [2024-10-12 19:16:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:15,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:15,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:15,070 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:16:15,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-12 19:16:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:15,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 2079 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 19:16:15,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-12 19:16:15,583 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:15,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095497813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:15,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:15,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2024-10-12 19:16:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711122971] [2024-10-12 19:16:15,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:15,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:16:15,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:16:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:16:15,584 INFO L87 Difference]: Start difference. First operand 2588 states and 4288 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-12 19:16:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:16,214 INFO L93 Difference]: Finished difference Result 2694 states and 4469 transitions. [2024-10-12 19:16:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:16:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 147 [2024-10-12 19:16:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:16,228 INFO L225 Difference]: With dead ends: 2694 [2024-10-12 19:16:16,228 INFO L226 Difference]: Without dead ends: 2679 [2024-10-12 19:16:16,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:16:16,230 INFO L432 NwaCegarLoop]: 905 mSDtfsCounter, 878 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:16,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 2318 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:16:16,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2024-10-12 19:16:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2594. [2024-10-12 19:16:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2036 states have (on average 1.6606090373280944) internal successors, (3381), 2088 states have internal predecessors, (3381), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2024-10-12 19:16:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4294 transitions. [2024-10-12 19:16:16,644 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 4294 transitions. Word has length 147 [2024-10-12 19:16:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:16,645 INFO L471 AbstractCegarLoop]: Abstraction has 2594 states and 4294 transitions. [2024-10-12 19:16:16,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-12 19:16:16,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 4294 transitions. [2024-10-12 19:16:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-12 19:16:16,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:16,651 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:16,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-12 19:16:16,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-12 19:16:16,851 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:16,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:16,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1244261606, now seen corresponding path program 1 times [2024-10-12 19:16:16,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:16,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292806365] [2024-10-12 19:16:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:16:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:16:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:16:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:16:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:16:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:16:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 19:16:17,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292806365] [2024-10-12 19:16:17,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292806365] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307913375] [2024-10-12 19:16:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:17,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:17,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:17,669 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:16:17,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-12 19:16:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:18,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 2092 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 19:16:18,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-12 19:16:18,116 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:18,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307913375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:18,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:18,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-10-12 19:16:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789045673] [2024-10-12 19:16:18,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:18,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 19:16:18,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:18,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 19:16:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:16:18,118 INFO L87 Difference]: Start difference. First operand 2594 states and 4294 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:18,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:18,702 INFO L93 Difference]: Finished difference Result 2784 states and 4570 transitions. [2024-10-12 19:16:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 19:16:18,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 152 [2024-10-12 19:16:18,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:18,716 INFO L225 Difference]: With dead ends: 2784 [2024-10-12 19:16:18,716 INFO L226 Difference]: Without dead ends: 2769 [2024-10-12 19:16:18,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:16:18,718 INFO L432 NwaCegarLoop]: 907 mSDtfsCounter, 854 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:18,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 3554 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:16:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2024-10-12 19:16:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2748. [2024-10-12 19:16:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2158 states have (on average 1.6556997219647822) internal successors, (3573), 2210 states have internal predecessors, (3573), 441 states have call successors, (441), 131 states have call predecessors, (441), 148 states have return successors, (507), 417 states have call predecessors, (507), 436 states have call successors, (507) [2024-10-12 19:16:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 4521 transitions. [2024-10-12 19:16:19,102 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 4521 transitions. Word has length 152 [2024-10-12 19:16:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:19,102 INFO L471 AbstractCegarLoop]: Abstraction has 2748 states and 4521 transitions. [2024-10-12 19:16:19,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-12 19:16:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 4521 transitions. [2024-10-12 19:16:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-12 19:16:19,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:19,107 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:19,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-12 19:16:19,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:19,308 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:19,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash 154209974, now seen corresponding path program 1 times [2024-10-12 19:16:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448864368] [2024-10-12 19:16:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:19,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:19,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:19,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:19,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:19,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:16:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:19,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:19,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:19,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:16:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:19,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:19,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:16:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:16:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:16:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:16:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 19:16:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-12 19:16:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448864368] [2024-10-12 19:16:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448864368] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551755937] [2024-10-12 19:16:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:20,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:20,147 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:16:20,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-12 19:16:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:20,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 2122 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 19:16:20,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-12 19:16:20,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:20,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551755937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:20,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:20,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-12 19:16:20,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50021141] [2024-10-12 19:16:20,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:20,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:16:20,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:16:20,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:16:20,532 INFO L87 Difference]: Start difference. First operand 2748 states and 4521 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-12 19:16:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:20,975 INFO L93 Difference]: Finished difference Result 5476 states and 9018 transitions. [2024-10-12 19:16:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:16:20,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2024-10-12 19:16:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:20,988 INFO L225 Difference]: With dead ends: 5476 [2024-10-12 19:16:20,989 INFO L226 Difference]: Without dead ends: 2718 [2024-10-12 19:16:20,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:16:20,997 INFO L432 NwaCegarLoop]: 900 mSDtfsCounter, 7 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:20,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2693 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:16:20,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2024-10-12 19:16:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 2718. [2024-10-12 19:16:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2131 states have (on average 1.655560769591741) internal successors, (3528), 2181 states have internal predecessors, (3528), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-10-12 19:16:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 4472 transitions. [2024-10-12 19:16:21,309 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 4472 transitions. Word has length 161 [2024-10-12 19:16:21,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:21,309 INFO L471 AbstractCegarLoop]: Abstraction has 2718 states and 4472 transitions. [2024-10-12 19:16:21,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-12 19:16:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 4472 transitions. [2024-10-12 19:16:21,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-12 19:16:21,314 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:21,314 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:21,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-12 19:16:21,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:21,515 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:21,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1346032737, now seen corresponding path program 1 times [2024-10-12 19:16:21,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:21,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569763007] [2024-10-12 19:16:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:21,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:21,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:21,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:21,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:21,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-12 19:16:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:21,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:21,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 19:16:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:16:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:16:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:16:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:16:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 19:16:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-12 19:16:22,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:22,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569763007] [2024-10-12 19:16:22,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569763007] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:22,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877799302] [2024-10-12 19:16:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:22,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:22,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:22,439 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:16:22,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-12 19:16:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:22,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 2125 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 19:16:22,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 19:16:22,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:22,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877799302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:22,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:22,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2024-10-12 19:16:22,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710279702] [2024-10-12 19:16:22,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:22,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:16:22,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:22,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:16:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:16:22,851 INFO L87 Difference]: Start difference. First operand 2718 states and 4472 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2024-10-12 19:16:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:23,243 INFO L93 Difference]: Finished difference Result 5410 states and 8913 transitions. [2024-10-12 19:16:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:16:23,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2024-10-12 19:16:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:23,258 INFO L225 Difference]: With dead ends: 5410 [2024-10-12 19:16:23,258 INFO L226 Difference]: Without dead ends: 2717 [2024-10-12 19:16:23,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:16:23,266 INFO L432 NwaCegarLoop]: 916 mSDtfsCounter, 119 mSDsluCounter, 4456 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5372 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:23,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5372 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:16:23,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2024-10-12 19:16:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2697. [2024-10-12 19:16:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2110 states have (on average 1.6559241706161136) internal successors, (3494), 2160 states have internal predecessors, (3494), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-10-12 19:16:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4438 transitions. [2024-10-12 19:16:23,817 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4438 transitions. Word has length 163 [2024-10-12 19:16:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:23,817 INFO L471 AbstractCegarLoop]: Abstraction has 2697 states and 4438 transitions. [2024-10-12 19:16:23,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2024-10-12 19:16:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4438 transitions. [2024-10-12 19:16:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-12 19:16:23,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:23,822 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:23,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-12 19:16:24,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-12 19:16:24,022 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:24,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:24,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1318116132, now seen corresponding path program 1 times [2024-10-12 19:16:24,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:24,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991189849] [2024-10-12 19:16:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:24,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 19:16:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 19:16:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:16:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:16:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:16:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:16:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 19:16:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 19:16:24,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:24,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991189849] [2024-10-12 19:16:24,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991189849] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:24,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867663141] [2024-10-12 19:16:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:24,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:24,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:24,810 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:16:24,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-12 19:16:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:25,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:16:25,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 19:16:25,208 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:25,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867663141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:25,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:25,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-12 19:16:25,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406114952] [2024-10-12 19:16:25,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:25,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:16:25,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:16:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:16:25,211 INFO L87 Difference]: Start difference. First operand 2697 states and 4438 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-12 19:16:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:25,588 INFO L93 Difference]: Finished difference Result 5391 states and 8882 transitions. [2024-10-12 19:16:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:16:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 165 [2024-10-12 19:16:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:25,603 INFO L225 Difference]: With dead ends: 5391 [2024-10-12 19:16:25,603 INFO L226 Difference]: Without dead ends: 2719 [2024-10-12 19:16:25,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:16:25,613 INFO L432 NwaCegarLoop]: 881 mSDtfsCounter, 127 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:25,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2570 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:16:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2024-10-12 19:16:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2697. [2024-10-12 19:16:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2110 states have (on average 1.6554502369668247) internal successors, (3493), 2160 states have internal predecessors, (3493), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-10-12 19:16:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4437 transitions. [2024-10-12 19:16:26,086 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4437 transitions. Word has length 165 [2024-10-12 19:16:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:26,086 INFO L471 AbstractCegarLoop]: Abstraction has 2697 states and 4437 transitions. [2024-10-12 19:16:26,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-12 19:16:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4437 transitions. [2024-10-12 19:16:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-12 19:16:26,090 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:26,091 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:26,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-12 19:16:26,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-12 19:16:26,292 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:26,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash 448032667, now seen corresponding path program 1 times [2024-10-12 19:16:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:26,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605781016] [2024-10-12 19:16:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:26,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 19:16:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-12 19:16:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:16:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:26,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:27,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:16:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:27,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:16:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:27,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:16:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:27,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 19:16:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-12 19:16:27,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:27,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605781016] [2024-10-12 19:16:27,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605781016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:27,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:16:27,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 19:16:27,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763568159] [2024-10-12 19:16:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:27,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:16:27,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:16:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:16:27,006 INFO L87 Difference]: Start difference. First operand 2697 states and 4437 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-12 19:16:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:32,824 INFO L93 Difference]: Finished difference Result 6205 states and 10369 transitions. [2024-10-12 19:16:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 19:16:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 166 [2024-10-12 19:16:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:32,840 INFO L225 Difference]: With dead ends: 6205 [2024-10-12 19:16:32,841 INFO L226 Difference]: Without dead ends: 3506 [2024-10-12 19:16:32,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:16:32,851 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 1922 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 3765 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 4283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:32,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 1289 Invalid, 4283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 3765 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-10-12 19:16:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2024-10-12 19:16:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 2658. [2024-10-12 19:16:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2074 states have (on average 1.654291224686596) internal successors, (3431), 2122 states have internal predecessors, (3431), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2024-10-12 19:16:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 4371 transitions. [2024-10-12 19:16:33,327 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 4371 transitions. Word has length 166 [2024-10-12 19:16:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:33,327 INFO L471 AbstractCegarLoop]: Abstraction has 2658 states and 4371 transitions. [2024-10-12 19:16:33,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-10-12 19:16:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 4371 transitions. [2024-10-12 19:16:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-12 19:16:33,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:33,330 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:33,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 19:16:33,330 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:33,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:33,331 INFO L85 PathProgramCache]: Analyzing trace with hash 892326162, now seen corresponding path program 1 times [2024-10-12 19:16:33,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:33,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133849637] [2024-10-12 19:16:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:33,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:33,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:33,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:33,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:33,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 19:16:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:33,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:33,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:16:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:33,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-12 19:16:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:33,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:33,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:16:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:16:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-12 19:16:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:16:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:16:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:16:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 19:16:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-12 19:16:34,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133849637] [2024-10-12 19:16:34,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133849637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:34,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:16:34,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 19:16:34,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392336738] [2024-10-12 19:16:34,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:34,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:16:34,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:34,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:16:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:16:34,155 INFO L87 Difference]: Start difference. First operand 2658 states and 4371 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)