./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 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 ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:01:57,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:01:57,517 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:01:57,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:01:57,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:01:57,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:01:57,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:01:57,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:01:57,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:01:57,567 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:01:57,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:01:57,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:01:57,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:01:57,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:01:57,571 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:01:57,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:01:57,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:01:57,575 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:01:57,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:01:57,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:01:57,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:01:57,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:01:57,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:01:57,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:01:57,578 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:01:57,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:01:57,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:01:57,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:01:57,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:01:57,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:01:57,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:01:57,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:01:57,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:01:57,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:01:57,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:01:57,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:01:57,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:01:57,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:01:57,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:01:57,583 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:01:57,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:01:57,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:01:57,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 18:01:57,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:01:57,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:01:57,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:01:57,906 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:01:57,906 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:01:57,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2023-11-22 18:01:59,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:01:59,414 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:01:59,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2023-11-22 18:01:59,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684611e9e/3f5a80197a6d4e819afc9412363e5fd6/FLAGe75520283 [2023-11-22 18:01:59,457 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684611e9e/3f5a80197a6d4e819afc9412363e5fd6 [2023-11-22 18:01:59,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:01:59,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:01:59,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:01:59,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:01:59,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:01:59,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:01:59" (1/1) ... [2023-11-22 18:01:59,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c6dff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:01:59, skipping insertion in model container [2023-11-22 18:01:59,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:01:59" (1/1) ... [2023-11-22 18:01:59,543 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:02:00,028 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2023-11-22 18:02:00,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:02:00,115 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:02:00,125 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-11-22 18:02:00,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2023-11-22 18:02:00,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [754] [2023-11-22 18:02:00,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [875] [2023-11-22 18:02:00,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1230] [2023-11-22 18:02:00,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2746] [2023-11-22 18:02:00,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2837] [2023-11-22 18:02:00,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2846] [2023-11-22 18:02:00,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2861] [2023-11-22 18:02:00,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2950] [2023-11-22 18:02:00,209 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2023-11-22 18:02:00,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:02:00,253 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:02:00,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00 WrapperNode [2023-11-22 18:02:00,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:02:00,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:02:00,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:02:00,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:02:00,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,356 INFO L138 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 817 [2023-11-22 18:02:00,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:02:00,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:02:00,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:02:00,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:02:00,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,374 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,398 INFO L189 HeapSplitter]: 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] [2023-11-22 18:02:00,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:02:00,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:02:00,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:02:00,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:02:00,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (1/1) ... [2023-11-22 18:02:00,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:02:00,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:00,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:02:00,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:02:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-22 18:02:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-22 18:02:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:02:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-22 18:02:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-22 18:02:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-22 18:02:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-22 18:02:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-22 18:02:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-22 18:02:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-22 18:02:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-22 18:02:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-22 18:02:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-22 18:02:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-22 18:02:00,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-22 18:02:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-22 18:02:00,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-22 18:02:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-22 18:02:00,587 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-22 18:02:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-22 18:02:00,589 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-22 18:02:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-22 18:02:00,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-22 18:02:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-22 18:02:00,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-22 18:02:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-22 18:02:00,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-22 18:02:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-22 18:02:00,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-22 18:02:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-22 18:02:00,591 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-22 18:02:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-22 18:02:00,591 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-22 18:02:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-22 18:02:00,591 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-22 18:02:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-22 18:02:00,592 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-22 18:02:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-22 18:02:00,592 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-22 18:02:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:02:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:02:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:02:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 18:02:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 18:02:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 18:02:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 18:02:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 18:02:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 18:02:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 18:02:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-22 18:02:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-22 18:02:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-22 18:02:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-22 18:02:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-22 18:02:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-22 18:02:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-22 18:02:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-22 18:02:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-22 18:02:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-22 18:02:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-22 18:02:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-22 18:02:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-22 18:02:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-22 18:02:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-22 18:02:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-22 18:02:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-22 18:02:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-22 18:02:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 18:02:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 18:02:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:02:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:02:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-22 18:02:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-22 18:02:00,943 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:02:00,947 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:02:01,938 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:02:02,013 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:02:02,013 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-22 18:02:02,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:02:02 BoogieIcfgContainer [2023-11-22 18:02:02,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:02:02,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:02:02,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:02:02,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:02:02,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:01:59" (1/3) ... [2023-11-22 18:02:02,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1e51e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:02:02, skipping insertion in model container [2023-11-22 18:02:02,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:02:00" (2/3) ... [2023-11-22 18:02:02,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1e51e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:02:02, skipping insertion in model container [2023-11-22 18:02:02,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:02:02" (3/3) ... [2023-11-22 18:02:02,025 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2023-11-22 18:02:02,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:02:02,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:02:02,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:02:02,143 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f55876b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:02:02,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:02:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 443 states have (on average 1.72686230248307) internal successors, (765), 461 states have internal predecessors, (765), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-22 18:02:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 18:02:02,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:02,176 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:02,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:02,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1069495149, now seen corresponding path program 1 times [2023-11-22 18:02:02,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:02,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237882759] [2023-11-22 18:02:02,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:02,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:02,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:02:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:02,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:02:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:02:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 18:02:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:03,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 18:02:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:02:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 18:02:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:03,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:02:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:03,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 18:02:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 18:02:03,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:03,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237882759] [2023-11-22 18:02:03,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237882759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:03,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701112595] [2023-11-22 18:02:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:03,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:03,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:03,108 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) [2023-11-22 18:02:03,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 18:02:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:03,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-22 18:02:03,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 18:02:03,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701112595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:03,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:03,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2023-11-22 18:02:03,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966908852] [2023-11-22 18:02:03,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:03,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 18:02:03,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:03,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 18:02:03,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:02:03,561 INFO L87 Difference]: Start difference. First operand has 570 states, 443 states have (on average 1.72686230248307) internal successors, (765), 461 states have internal predecessors, (765), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:03,723 INFO L93 Difference]: Finished difference Result 1124 states and 1919 transitions. [2023-11-22 18:02:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 18:02:03,726 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-22 18:02:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:03,746 INFO L225 Difference]: With dead ends: 1124 [2023-11-22 18:02:03,747 INFO L226 Difference]: Without dead ends: 564 [2023-11-22 18:02:03,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:02:03,760 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:03,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 937 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-22 18:02:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2023-11-22 18:02:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 440 states have (on average 1.7022727272727274) internal successors, (749), 456 states have internal predecessors, (749), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-22 18:02:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 946 transitions. [2023-11-22 18:02:03,869 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 946 transitions. Word has length 103 [2023-11-22 18:02:03,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:03,872 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 946 transitions. [2023-11-22 18:02:03,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 946 transitions. [2023-11-22 18:02:03,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 18:02:03,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:03,882 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:03,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-22 18:02:04,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:04,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash -428494387, now seen corresponding path program 1 times [2023-11-22 18:02:04,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:04,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124675128] [2023-11-22 18:02:04,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:04,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:02:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:02:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:02:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 18:02:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 18:02:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:02:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 18:02:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:02:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 18:02:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 18:02:04,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124675128] [2023-11-22 18:02:04,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124675128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030502467] [2023-11-22 18:02:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:04,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:04,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:04,646 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) [2023-11-22 18:02:04,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 18:02:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:04,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:02:04,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 18:02:04,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:04,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030502467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:04,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:04,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-22 18:02:04,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314613888] [2023-11-22 18:02:04,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:04,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:02:04,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:02:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:02:04,999 INFO L87 Difference]: Start difference. First operand 564 states and 946 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:05,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:05,162 INFO L93 Difference]: Finished difference Result 1657 states and 2819 transitions. [2023-11-22 18:02:05,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:02:05,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-22 18:02:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:05,174 INFO L225 Difference]: With dead ends: 1657 [2023-11-22 18:02:05,174 INFO L226 Difference]: Without dead ends: 1108 [2023-11-22 18:02:05,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:02:05,180 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 941 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:05,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1889 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2023-11-22 18:02:05,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1099. [2023-11-22 18:02:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 865 states have (on average 1.7098265895953757) internal successors, (1479), 894 states have internal predecessors, (1479), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-22 18:02:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1863 transitions. [2023-11-22 18:02:05,259 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1863 transitions. Word has length 103 [2023-11-22 18:02:05,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:05,260 INFO L495 AbstractCegarLoop]: Abstraction has 1099 states and 1863 transitions. [2023-11-22 18:02:05,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1863 transitions. [2023-11-22 18:02:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-22 18:02:05,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:05,265 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:05,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:05,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-22 18:02:05,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:05,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1130094261, now seen corresponding path program 1 times [2023-11-22 18:02:05,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:05,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423941126] [2023-11-22 18:02:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:02:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:02:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:02:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 18:02:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 18:02:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:02:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 18:02:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:02:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 18:02:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 18:02:05,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423941126] [2023-11-22 18:02:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423941126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063995090] [2023-11-22 18:02:05,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:05,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:05,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:05,851 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) [2023-11-22 18:02:05,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 18:02:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:06,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:02:06,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 18:02:06,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:06,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063995090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:06,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:06,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 18:02:06,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939894826] [2023-11-22 18:02:06,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:06,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:02:06,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:06,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:02:06,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:02:06,184 INFO L87 Difference]: Start difference. First operand 1099 states and 1863 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:06,319 INFO L93 Difference]: Finished difference Result 2204 states and 3739 transitions. [2023-11-22 18:02:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:02:06,320 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-22 18:02:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:06,326 INFO L225 Difference]: With dead ends: 2204 [2023-11-22 18:02:06,327 INFO L226 Difference]: Without dead ends: 1108 [2023-11-22 18:02:06,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:02:06,333 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 26 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:06,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2739 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2023-11-22 18:02:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2023-11-22 18:02:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 873 states have (on average 1.7101947308132874) internal successors, (1493), 902 states have internal predecessors, (1493), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-22 18:02:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1877 transitions. [2023-11-22 18:02:06,379 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1877 transitions. Word has length 103 [2023-11-22 18:02:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:06,379 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1877 transitions. [2023-11-22 18:02:06,379 INFO L496 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1877 transitions. [2023-11-22 18:02:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-22 18:02:06,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:06,384 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:06,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:06,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:06,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:06,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1006973529, now seen corresponding path program 1 times [2023-11-22 18:02:06,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:06,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629333584] [2023-11-22 18:02:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:06,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 18:02:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 18:02:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 18:02:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:02:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 18:02:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 18:02:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:02:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:02:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 18:02:07,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:07,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629333584] [2023-11-22 18:02:07,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629333584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:07,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035579176] [2023-11-22 18:02:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:07,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:07,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:07,148 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) [2023-11-22 18:02:07,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 18:02:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:07,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:02:07,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:02:07,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035579176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-22 18:02:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717864452] [2023-11-22 18:02:07,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:07,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:02:07,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:07,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:02:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:02:07,474 INFO L87 Difference]: Start difference. First operand 1108 states and 1877 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:07,720 INFO L93 Difference]: Finished difference Result 2255 states and 3833 transitions. [2023-11-22 18:02:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:02:07,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-11-22 18:02:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:07,734 INFO L225 Difference]: With dead ends: 2255 [2023-11-22 18:02:07,734 INFO L226 Difference]: Without dead ends: 1152 [2023-11-22 18:02:07,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:02:07,744 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 168 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:07,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2585 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:02:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-11-22 18:02:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2023-11-22 18:02:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 916 states have (on average 1.720524017467249) internal successors, (1576), 945 states have internal predecessors, (1576), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-22 18:02:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1960 transitions. [2023-11-22 18:02:07,823 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1960 transitions. Word has length 105 [2023-11-22 18:02:07,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:07,824 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1960 transitions. [2023-11-22 18:02:07,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1960 transitions. [2023-11-22 18:02:07,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-22 18:02:07,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:07,830 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:07,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:08,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:08,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:08,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash -813048253, now seen corresponding path program 1 times [2023-11-22 18:02:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:08,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192671730] [2023-11-22 18:02:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:08,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:02:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 18:02:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:02:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 18:02:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 18:02:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 18:02:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 18:02:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:02:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 18:02:08,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:08,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192671730] [2023-11-22 18:02:08,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192671730] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:08,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800351125] [2023-11-22 18:02:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:08,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:08,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:08,421 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) [2023-11-22 18:02:08,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 18:02:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:08,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 18:02:08,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:02:08,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:08,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800351125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:08,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:08,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 18:02:08,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224063534] [2023-11-22 18:02:08,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:08,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:02:08,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:08,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:02:08,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-22 18:02:08,821 INFO L87 Difference]: Start difference. First operand 1152 states and 1960 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:09,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:09,056 INFO L93 Difference]: Finished difference Result 2332 states and 3965 transitions. [2023-11-22 18:02:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:02:09,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-11-22 18:02:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:09,066 INFO L225 Difference]: With dead ends: 2332 [2023-11-22 18:02:09,066 INFO L226 Difference]: Without dead ends: 1185 [2023-11-22 18:02:09,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:02:09,076 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 113 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5403 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:09,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5403 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:09,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-11-22 18:02:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1164. [2023-11-22 18:02:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 925 states have (on average 1.718918918918919) internal successors, (1590), 956 states have internal predecessors, (1590), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-11-22 18:02:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1980 transitions. [2023-11-22 18:02:09,130 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1980 transitions. Word has length 107 [2023-11-22 18:02:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:09,131 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1980 transitions. [2023-11-22 18:02:09,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1980 transitions. [2023-11-22 18:02:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-22 18:02:09,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:09,136 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:09,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:09,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:09,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:09,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash -160611478, now seen corresponding path program 1 times [2023-11-22 18:02:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:09,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523730271] [2023-11-22 18:02:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:09,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 18:02:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 18:02:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 18:02:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:02:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 18:02:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:02:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 18:02:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 18:02:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:02:09,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:09,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523730271] [2023-11-22 18:02:09,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523730271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:09,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005015327] [2023-11-22 18:02:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:09,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:09,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:09,711 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) [2023-11-22 18:02:09,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 18:02:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:09,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 18:02:09,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:02:10,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005015327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:10,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:10,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 18:02:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490296882] [2023-11-22 18:02:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:10,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:02:10,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:02:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:02:10,066 INFO L87 Difference]: Start difference. First operand 1164 states and 1980 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:10,252 INFO L93 Difference]: Finished difference Result 2350 states and 3994 transitions. [2023-11-22 18:02:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:02:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-11-22 18:02:10,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:10,261 INFO L225 Difference]: With dead ends: 2350 [2023-11-22 18:02:10,262 INFO L226 Difference]: Without dead ends: 1193 [2023-11-22 18:02:10,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:02:10,269 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 124 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5391 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:10,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5391 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:10,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-11-22 18:02:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1164. [2023-11-22 18:02:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 925 states have (on average 1.718918918918919) internal successors, (1590), 956 states have internal predecessors, (1590), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-11-22 18:02:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1980 transitions. [2023-11-22 18:02:10,309 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1980 transitions. Word has length 108 [2023-11-22 18:02:10,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:10,309 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1980 transitions. [2023-11-22 18:02:10,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1980 transitions. [2023-11-22 18:02:10,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-22 18:02:10,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:10,313 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:10,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:10,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:10,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:10,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1218816576, now seen corresponding path program 1 times [2023-11-22 18:02:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:10,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125916703] [2023-11-22 18:02:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:10,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:02:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 18:02:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 18:02:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 18:02:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:02:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 18:02:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:02:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 18:02:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 18:02:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 18:02:10,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:10,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125916703] [2023-11-22 18:02:10,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125916703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:10,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173935507] [2023-11-22 18:02:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:10,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:10,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:10,807 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) [2023-11-22 18:02:10,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 18:02:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:02:11,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 18:02:11,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173935507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:11,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 18:02:11,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069192977] [2023-11-22 18:02:11,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:11,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:02:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:11,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:02:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:02:11,104 INFO L87 Difference]: Start difference. First operand 1164 states and 1980 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:11,211 INFO L93 Difference]: Finished difference Result 2338 states and 3974 transitions. [2023-11-22 18:02:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:02:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2023-11-22 18:02:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:11,219 INFO L225 Difference]: With dead ends: 2338 [2023-11-22 18:02:11,219 INFO L226 Difference]: Without dead ends: 1175 [2023-11-22 18:02:11,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:02:11,226 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 20 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:11,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2740 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-11-22 18:02:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2023-11-22 18:02:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 18:02:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 18:02:11,305 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 108 [2023-11-22 18:02:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:11,306 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 18:02:11,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:11,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 18:02:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-22 18:02:11,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:11,310 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:11,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:11,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:11,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:11,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash -486685313, now seen corresponding path program 1 times [2023-11-22 18:02:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819458532] [2023-11-22 18:02:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 18:02:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 18:02:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 18:02:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 18:02:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 18:02:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 18:02:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 18:02:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 18:02:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:02:11,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819458532] [2023-11-22 18:02:11,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819458532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678244921] [2023-11-22 18:02:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:11,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:11,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:11,863 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) [2023-11-22 18:02:11,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 18:02:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:12,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 18:02:12,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:02:12,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:12,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678244921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:12,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:12,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 18:02:12,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740635872] [2023-11-22 18:02:12,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:12,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:02:12,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:12,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:02:12,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:02:12,222 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:12,391 INFO L93 Difference]: Finished difference Result 2359 states and 3989 transitions. [2023-11-22 18:02:12,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:02:12,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-11-22 18:02:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:12,398 INFO L225 Difference]: With dead ends: 2359 [2023-11-22 18:02:12,399 INFO L226 Difference]: Without dead ends: 1204 [2023-11-22 18:02:12,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:02:12,406 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 135 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5373 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:12,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5373 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2023-11-22 18:02:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1173. [2023-11-22 18:02:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 18:02:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 18:02:12,442 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 109 [2023-11-22 18:02:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:12,442 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 18:02:12,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 18:02:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-22 18:02:12,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:12,446 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:12,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:12,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-22 18:02:12,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:12,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1659098947, now seen corresponding path program 1 times [2023-11-22 18:02:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500364594] [2023-11-22 18:02:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:12,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 18:02:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 18:02:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 18:02:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 18:02:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 18:02:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 18:02:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 18:02:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 18:02:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:02:13,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500364594] [2023-11-22 18:02:13,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500364594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637795924] [2023-11-22 18:02:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:13,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:13,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:13,055 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) [2023-11-22 18:02:13,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 18:02:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:13,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 18:02:13,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:02:13,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:13,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637795924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:13,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:13,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 18:02:13,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457329602] [2023-11-22 18:02:13,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:13,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:02:13,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:02:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:02:13,421 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:13,646 INFO L93 Difference]: Finished difference Result 2361 states and 3992 transitions. [2023-11-22 18:02:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:02:13,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-11-22 18:02:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:13,655 INFO L225 Difference]: With dead ends: 2361 [2023-11-22 18:02:13,655 INFO L226 Difference]: Without dead ends: 1206 [2023-11-22 18:02:13,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 18:02:13,663 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 131 mSDsluCounter, 5343 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6249 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:13,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6249 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-11-22 18:02:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1173. [2023-11-22 18:02:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 18:02:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 18:02:13,702 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 109 [2023-11-22 18:02:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:13,703 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 18:02:13,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:13,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 18:02:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-22 18:02:13,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:13,708 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:13,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:13,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:13,927 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:13,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:13,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1513483238, now seen corresponding path program 1 times [2023-11-22 18:02:13,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:13,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350488488] [2023-11-22 18:02:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:13,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:02:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 18:02:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 18:02:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:02:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 18:02:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 18:02:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 18:02:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 18:02:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:02:14,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:14,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350488488] [2023-11-22 18:02:14,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350488488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:14,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414978033] [2023-11-22 18:02:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:14,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:14,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:14,327 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) [2023-11-22 18:02:14,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 18:02:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:14,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 18:02:14,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:02:14,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:14,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414978033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:14,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:14,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 18:02:14,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514094474] [2023-11-22 18:02:14,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:14,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:02:14,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:14,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:02:14,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:02:14,705 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:14,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:14,951 INFO L93 Difference]: Finished difference Result 2361 states and 3992 transitions. [2023-11-22 18:02:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:02:14,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-11-22 18:02:14,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:14,958 INFO L225 Difference]: With dead ends: 2361 [2023-11-22 18:02:14,958 INFO L226 Difference]: Without dead ends: 1206 [2023-11-22 18:02:14,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 18:02:14,964 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 141 mSDsluCounter, 5331 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6237 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:14,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6237 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-11-22 18:02:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1173. [2023-11-22 18:02:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 18:02:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 18:02:15,006 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 110 [2023-11-22 18:02:15,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:15,006 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 18:02:15,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:15,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 18:02:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-22 18:02:15,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:15,010 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:15,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:15,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 18:02:15,224 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:15,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:15,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1008032440, now seen corresponding path program 1 times [2023-11-22 18:02:15,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:15,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440708552] [2023-11-22 18:02:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:15,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:02:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:02:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 18:02:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 18:02:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 18:02:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 18:02:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:02:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 18:02:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:02:15,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:15,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440708552] [2023-11-22 18:02:15,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440708552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:15,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173817363] [2023-11-22 18:02:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:15,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:15,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:15,577 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) [2023-11-22 18:02:15,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 18:02:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:15,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 18:02:15,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:02:15,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:15,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173817363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:15,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:15,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 18:02:15,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248001141] [2023-11-22 18:02:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:15,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:02:15,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:02:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:02:15,939 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:16,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:16,164 INFO L93 Difference]: Finished difference Result 2353 states and 3978 transitions. [2023-11-22 18:02:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:02:16,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2023-11-22 18:02:16,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:16,172 INFO L225 Difference]: With dead ends: 2353 [2023-11-22 18:02:16,172 INFO L226 Difference]: Without dead ends: 1198 [2023-11-22 18:02:16,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 18:02:16,180 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 151 mSDsluCounter, 5319 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6225 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:16,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6225 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-11-22 18:02:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1173. [2023-11-22 18:02:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7095391211146838) internal successors, (1595), 964 states have internal predecessors, (1595), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 18:02:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1984 transitions. [2023-11-22 18:02:16,216 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1984 transitions. Word has length 111 [2023-11-22 18:02:16,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:16,217 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1984 transitions. [2023-11-22 18:02:16,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:16,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1984 transitions. [2023-11-22 18:02:16,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-22 18:02:16,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:16,221 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:16,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:16,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 18:02:16,437 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:16,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1766035226, now seen corresponding path program 1 times [2023-11-22 18:02:16,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:16,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449114193] [2023-11-22 18:02:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:16,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:02:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:02:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:02:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:02:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 18:02:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 18:02:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 18:02:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 18:02:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:02:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 18:02:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 18:02:16,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:16,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449114193] [2023-11-22 18:02:16,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449114193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:16,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608240789] [2023-11-22 18:02:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:16,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:16,702 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) [2023-11-22 18:02:16,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 18:02:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:16,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:02:16,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 18:02:17,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608240789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:17,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:17,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 18:02:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19100196] [2023-11-22 18:02:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:02:17,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:02:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:02:17,004 INFO L87 Difference]: Start difference. First operand 1173 states and 1984 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:17,125 INFO L93 Difference]: Finished difference Result 2317 states and 3925 transitions. [2023-11-22 18:02:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:02:17,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2023-11-22 18:02:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:17,136 INFO L225 Difference]: With dead ends: 2317 [2023-11-22 18:02:17,136 INFO L226 Difference]: Without dead ends: 1173 [2023-11-22 18:02:17,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:02:17,142 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 35 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:17,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2738 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2023-11-22 18:02:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2023-11-22 18:02:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 933 states have (on average 1.7041800643086817) internal successors, (1590), 964 states have internal predecessors, (1590), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-22 18:02:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1979 transitions. [2023-11-22 18:02:17,182 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1979 transitions. Word has length 111 [2023-11-22 18:02:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:17,184 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1979 transitions. [2023-11-22 18:02:17,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1979 transitions. [2023-11-22 18:02:17,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-22 18:02:17,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:17,188 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:17,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:17,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-22 18:02:17,406 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:17,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1736644033, now seen corresponding path program 1 times [2023-11-22 18:02:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:17,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850803073] [2023-11-22 18:02:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:17,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:02:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:02:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:02:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 18:02:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 18:02:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:02:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:02:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 18:02:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:02:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 18:02:17,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:17,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850803073] [2023-11-22 18:02:17,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850803073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:17,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039465269] [2023-11-22 18:02:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:17,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:17,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:17,710 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) [2023-11-22 18:02:17,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 18:02:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:17,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:02:17,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 18:02:18,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:18,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039465269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:18,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:18,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-22 18:02:18,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082315497] [2023-11-22 18:02:18,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:18,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:02:18,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:02:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:02:18,021 INFO L87 Difference]: Start difference. First operand 1173 states and 1979 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:18,217 INFO L93 Difference]: Finished difference Result 2313 states and 3916 transitions. [2023-11-22 18:02:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:02:18,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2023-11-22 18:02:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:18,224 INFO L225 Difference]: With dead ends: 2313 [2023-11-22 18:02:18,225 INFO L226 Difference]: Without dead ends: 1225 [2023-11-22 18:02:18,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:02:18,230 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 239 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:18,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2574 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-11-22 18:02:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1217. [2023-11-22 18:02:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 976 states have (on average 1.714139344262295) internal successors, (1673), 1007 states have internal predecessors, (1673), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-22 18:02:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2061 transitions. [2023-11-22 18:02:18,266 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2061 transitions. Word has length 112 [2023-11-22 18:02:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:18,267 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 2061 transitions. [2023-11-22 18:02:18,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2061 transitions. [2023-11-22 18:02:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-22 18:02:18,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:18,271 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:18,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:18,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 18:02:18,489 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:18,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash 2000035450, now seen corresponding path program 1 times [2023-11-22 18:02:18,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:18,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733610354] [2023-11-22 18:02:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:18,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:02:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:02:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 18:02:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:02:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 18:02:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 18:02:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 18:02:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 18:02:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 18:02:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 18:02:18,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733610354] [2023-11-22 18:02:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733610354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503466974] [2023-11-22 18:02:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:18,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:18,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:18,867 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) [2023-11-22 18:02:18,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 18:02:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 18:02:19,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:02:19,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:19,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503466974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:19,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:19,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2023-11-22 18:02:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768515774] [2023-11-22 18:02:19,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:19,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:02:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:19,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:02:19,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-11-22 18:02:19,226 INFO L87 Difference]: Start difference. First operand 1217 states and 2061 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:19,393 INFO L93 Difference]: Finished difference Result 2347 states and 3965 transitions. [2023-11-22 18:02:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:02:19,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2023-11-22 18:02:19,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:19,401 INFO L225 Difference]: With dead ends: 2347 [2023-11-22 18:02:19,401 INFO L226 Difference]: Without dead ends: 1259 [2023-11-22 18:02:19,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-22 18:02:19,407 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 113 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5398 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:19,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5398 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-11-22 18:02:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1229. [2023-11-22 18:02:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7126903553299493) internal successors, (1687), 1018 states have internal predecessors, (1687), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 18:02:19,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2079 transitions. [2023-11-22 18:02:19,468 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2079 transitions. Word has length 113 [2023-11-22 18:02:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:19,468 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2079 transitions. [2023-11-22 18:02:19,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2079 transitions. [2023-11-22 18:02:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-22 18:02:19,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:19,474 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:19,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:19,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:19,695 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:19,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1050717819, now seen corresponding path program 1 times [2023-11-22 18:02:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752511815] [2023-11-22 18:02:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:02:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:02:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 18:02:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:02:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:02:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:19,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:20,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:02:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:02:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:02:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:20,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 18:02:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 18:02:20,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:20,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752511815] [2023-11-22 18:02:20,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752511815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:20,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460261141] [2023-11-22 18:02:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:20,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:20,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:20,015 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) [2023-11-22 18:02:20,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 18:02:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:20,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 18:02:20,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:02:20,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:20,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460261141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:20,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:20,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 18:02:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358902468] [2023-11-22 18:02:20,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:20,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:02:20,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:02:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-22 18:02:20,402 INFO L87 Difference]: Start difference. First operand 1229 states and 2079 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:20,581 INFO L93 Difference]: Finished difference Result 2355 states and 3978 transitions. [2023-11-22 18:02:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:02:20,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-11-22 18:02:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:20,588 INFO L225 Difference]: With dead ends: 2355 [2023-11-22 18:02:20,589 INFO L226 Difference]: Without dead ends: 1267 [2023-11-22 18:02:20,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:02:20,594 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 124 mSDsluCounter, 4475 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5392 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:20,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5392 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2023-11-22 18:02:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1229. [2023-11-22 18:02:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7126903553299493) internal successors, (1687), 1018 states have internal predecessors, (1687), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 18:02:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2079 transitions. [2023-11-22 18:02:20,637 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2079 transitions. Word has length 114 [2023-11-22 18:02:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:20,637 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2079 transitions. [2023-11-22 18:02:20,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2079 transitions. [2023-11-22 18:02:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-22 18:02:20,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:20,642 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:20,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:20,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-22 18:02:20,856 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:20,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1948668411, now seen corresponding path program 1 times [2023-11-22 18:02:20,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:20,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703121672] [2023-11-22 18:02:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:02:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:02:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 18:02:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:02:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:02:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:02:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:02:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:02:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 18:02:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 18:02:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:21,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703121672] [2023-11-22 18:02:21,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703121672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:21,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52038131] [2023-11-22 18:02:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:21,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:21,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:21,160 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) [2023-11-22 18:02:21,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 18:02:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:21,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 18:02:21,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:02:21,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:21,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52038131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:21,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:21,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-22 18:02:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427106158] [2023-11-22 18:02:21,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:21,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:02:21,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:02:21,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:02:21,531 INFO L87 Difference]: Start difference. First operand 1229 states and 2079 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:21,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:21,767 INFO L93 Difference]: Finished difference Result 2357 states and 3980 transitions. [2023-11-22 18:02:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:02:21,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-11-22 18:02:21,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:21,773 INFO L225 Difference]: With dead ends: 2357 [2023-11-22 18:02:21,774 INFO L226 Difference]: Without dead ends: 1269 [2023-11-22 18:02:21,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-11-22 18:02:21,778 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 132 mSDsluCounter, 5350 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:21,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6257 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:21,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-11-22 18:02:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1229. [2023-11-22 18:02:21,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7126903553299493) internal successors, (1687), 1018 states have internal predecessors, (1687), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 18:02:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2079 transitions. [2023-11-22 18:02:21,817 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2079 transitions. Word has length 114 [2023-11-22 18:02:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:21,817 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2079 transitions. [2023-11-22 18:02:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2079 transitions. [2023-11-22 18:02:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-22 18:02:21,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:21,822 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:21,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:22,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 18:02:22,038 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:22,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash -578634277, now seen corresponding path program 1 times [2023-11-22 18:02:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:22,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713850936] [2023-11-22 18:02:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:02:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:02:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:02:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 18:02:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:02:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:02:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:02:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:02:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:02:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 18:02:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 18:02:22,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713850936] [2023-11-22 18:02:22,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713850936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704841700] [2023-11-22 18:02:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:22,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:22,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:22,325 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) [2023-11-22 18:02:22,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 18:02:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:22,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:02:22,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 18:02:22,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:22,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704841700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:22,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:22,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 18:02:22,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393215450] [2023-11-22 18:02:22,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:22,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:02:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:02:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:02:22,619 INFO L87 Difference]: Start difference. First operand 1229 states and 2079 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:22,706 INFO L93 Difference]: Finished difference Result 2389 states and 4044 transitions. [2023-11-22 18:02:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:02:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2023-11-22 18:02:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:22,712 INFO L225 Difference]: With dead ends: 2389 [2023-11-22 18:02:22,712 INFO L226 Difference]: Without dead ends: 1229 [2023-11-22 18:02:22,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:02:22,716 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 10 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:22,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2740 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:02:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-11-22 18:02:22,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2023-11-22 18:02:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7096446700507615) internal successors, (1684), 1018 states have internal predecessors, (1684), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 18:02:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2076 transitions. [2023-11-22 18:02:22,748 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2076 transitions. Word has length 114 [2023-11-22 18:02:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:22,748 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2076 transitions. [2023-11-22 18:02:22,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2076 transitions. [2023-11-22 18:02:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-22 18:02:22,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:22,752 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:22,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:22,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 18:02:22,969 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:22,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:22,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1436783228, now seen corresponding path program 1 times [2023-11-22 18:02:22,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:22,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565911385] [2023-11-22 18:02:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:22,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:02:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:02:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 18:02:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 18:02:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 18:02:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 18:02:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 18:02:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 18:02:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-22 18:02:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 18:02:23,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:23,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565911385] [2023-11-22 18:02:23,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565911385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:23,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135014653] [2023-11-22 18:02:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:23,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:23,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:23,298 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) [2023-11-22 18:02:23,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 18:02:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:23,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 18:02:23,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:02:23,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:23,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135014653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:23,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:23,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-22 18:02:23,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659456208] [2023-11-22 18:02:23,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:23,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:02:23,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:02:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:02:23,677 INFO L87 Difference]: Start difference. First operand 1229 states and 2076 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:23,900 INFO L93 Difference]: Finished difference Result 2349 states and 3964 transitions. [2023-11-22 18:02:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:02:23,901 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), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-11-22 18:02:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:23,907 INFO L225 Difference]: With dead ends: 2349 [2023-11-22 18:02:23,907 INFO L226 Difference]: Without dead ends: 1261 [2023-11-22 18:02:23,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-11-22 18:02:23,912 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 142 mSDsluCounter, 5323 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6227 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:23,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6227 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-11-22 18:02:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1229. [2023-11-22 18:02:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 985 states have (on average 1.7096446700507615) internal successors, (1684), 1018 states have internal predecessors, (1684), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-22 18:02:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2076 transitions. [2023-11-22 18:02:23,986 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2076 transitions. Word has length 115 [2023-11-22 18:02:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:23,987 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2076 transitions. [2023-11-22 18:02:23,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2076 transitions. [2023-11-22 18:02:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-22 18:02:23,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:23,991 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:24,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:24,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 18:02:24,209 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:24,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:24,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1471037462, now seen corresponding path program 1 times [2023-11-22 18:02:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:24,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712967078] [2023-11-22 18:02:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:24,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:02:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:02:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 18:02:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 18:02:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-22 18:02:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 18:02:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 18:02:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:02:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 18:02:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 18:02:24,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:24,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712967078] [2023-11-22 18:02:24,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712967078] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:24,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848552718] [2023-11-22 18:02:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:24,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:24,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:24,496 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) [2023-11-22 18:02:24,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 18:02:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:24,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 18:02:24,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 18:02:24,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:24,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848552718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:24,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:24,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 11 [2023-11-22 18:02:24,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832691937] [2023-11-22 18:02:24,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:24,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:02:24,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:24,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:02:24,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:02:24,754 INFO L87 Difference]: Start difference. First operand 1229 states and 2076 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:24,839 INFO L93 Difference]: Finished difference Result 2440 states and 4133 transitions. [2023-11-22 18:02:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:02:24,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-11-22 18:02:24,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:24,846 INFO L225 Difference]: With dead ends: 2440 [2023-11-22 18:02:24,846 INFO L226 Difference]: Without dead ends: 1195 [2023-11-22 18:02:24,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:02:24,851 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 13 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:24,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2739 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:02:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2023-11-22 18:02:24,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2023-11-22 18:02:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 954 states have (on average 1.6960167714884695) internal successors, (1618), 985 states have internal predecessors, (1618), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-22 18:02:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2006 transitions. [2023-11-22 18:02:24,884 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2006 transitions. Word has length 116 [2023-11-22 18:02:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:24,884 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 2006 transitions. [2023-11-22 18:02:24,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2006 transitions. [2023-11-22 18:02:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-22 18:02:24,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:24,889 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:24,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:25,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:25,111 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:25,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1695159395, now seen corresponding path program 1 times [2023-11-22 18:02:25,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:25,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204091359] [2023-11-22 18:02:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:25,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:02:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 18:02:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:02:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 18:02:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 18:02:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 18:02:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 18:02:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 18:02:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 18:02:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:25,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204091359] [2023-11-22 18:02:25,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204091359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:02:25,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482384657] [2023-11-22 18:02:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:25,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:25,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:02:25,417 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) [2023-11-22 18:02:25,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 18:02:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:25,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 18:02:25,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:02:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 18:02:25,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:02:25,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482384657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:25,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:02:25,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-11-22 18:02:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411001971] [2023-11-22 18:02:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:25,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:02:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:25,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:02:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:02:25,726 INFO L87 Difference]: Start difference. First operand 1195 states and 2006 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:25,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:25,868 INFO L93 Difference]: Finished difference Result 2396 states and 4020 transitions. [2023-11-22 18:02:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:02:25,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2023-11-22 18:02:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:25,883 INFO L225 Difference]: With dead ends: 2396 [2023-11-22 18:02:25,884 INFO L226 Difference]: Without dead ends: 1214 [2023-11-22 18:02:25,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:02:25,889 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 134 mSDsluCounter, 4466 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5390 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:25,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5390 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:02:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2023-11-22 18:02:25,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1188. [2023-11-22 18:02:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 947 states have (on average 1.6916578669482576) internal successors, (1602), 978 states have internal predecessors, (1602), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-22 18:02:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1990 transitions. [2023-11-22 18:02:25,930 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1990 transitions. Word has length 117 [2023-11-22 18:02:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:25,931 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1990 transitions. [2023-11-22 18:02:25,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1990 transitions. [2023-11-22 18:02:25,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-22 18:02:25,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:25,935 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:25,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 18:02:26,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:02:26,154 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:26,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash 26278668, now seen corresponding path program 1 times [2023-11-22 18:02:26,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:26,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766648145] [2023-11-22 18:02:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:26,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:02:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:02:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 18:02:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 18:02:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:02:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 18:02:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 18:02:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:02:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 18:02:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766648145] [2023-11-22 18:02:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766648145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:26,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:02:26,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 18:02:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455794971] [2023-11-22 18:02:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:26,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 18:02:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 18:02:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:02:26,481 INFO L87 Difference]: Start difference. First operand 1188 states and 1990 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:31,678 INFO L93 Difference]: Finished difference Result 2775 states and 4687 transitions. [2023-11-22 18:02:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 18:02:31,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2023-11-22 18:02:31,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:31,686 INFO L225 Difference]: With dead ends: 2775 [2023-11-22 18:02:31,687 INFO L226 Difference]: Without dead ends: 1683 [2023-11-22 18:02:31,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-11-22 18:02:31,691 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1536 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 5045 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 5045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:31,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 2361 Invalid, 5460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [415 Valid, 5045 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-22 18:02:31,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2023-11-22 18:02:31,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1248. [2023-11-22 18:02:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 993 states have (on average 1.6827794561933536) internal successors, (1671), 1024 states have internal predecessors, (1671), 201 states have call successors, (201), 51 states have call predecessors, (201), 53 states have return successors, (220), 196 states have call predecessors, (220), 197 states have call successors, (220) [2023-11-22 18:02:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2092 transitions. [2023-11-22 18:02:31,889 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2092 transitions. Word has length 118 [2023-11-22 18:02:31,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:31,889 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 2092 transitions. [2023-11-22 18:02:31,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-22 18:02:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2092 transitions. [2023-11-22 18:02:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-22 18:02:31,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:31,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:02:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 18:02:31,893 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:31,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash 123181112, now seen corresponding path program 1 times [2023-11-22 18:02:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572993840] [2023-11-22 18:02:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:31,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:02:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:02:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:02:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 18:02:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 18:02:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:02:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 18:02:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 18:02:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:02:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 18:02:32,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572993840] [2023-11-22 18:02:32,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572993840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:32,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:02:32,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:02:32,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241467024] [2023-11-22 18:02:32,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:32,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:02:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:02:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:02:32,137 INFO L87 Difference]: Start difference. First operand 1248 states and 2092 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:35,636 INFO L93 Difference]: Finished difference Result 2858 states and 4823 transitions. [2023-11-22 18:02:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 18:02:35,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-22 18:02:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:35,642 INFO L225 Difference]: With dead ends: 2858 [2023-11-22 18:02:35,642 INFO L226 Difference]: Without dead ends: 1615 [2023-11-22 18:02:35,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:02:35,646 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1467 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:35,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1235 Invalid, 3030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-22 18:02:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2023-11-22 18:02:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1221. [2023-11-22 18:02:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 969 states have (on average 1.6780185758513932) internal successors, (1626), 998 states have internal predecessors, (1626), 200 states have call successors, (200), 51 states have call predecessors, (200), 51 states have return successors, (217), 195 states have call predecessors, (217), 196 states have call successors, (217) [2023-11-22 18:02:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 2043 transitions. [2023-11-22 18:02:35,869 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 2043 transitions. Word has length 118 [2023-11-22 18:02:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:35,869 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 2043 transitions. [2023-11-22 18:02:35,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:02:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 2043 transitions. [2023-11-22 18:02:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-22 18:02:35,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:35,873 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:35,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 18:02:35,874 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:35,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:35,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1357290559, now seen corresponding path program 1 times [2023-11-22 18:02:35,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:35,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775162823] [2023-11-22 18:02:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:35,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:35,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:02:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:02:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:02:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:02:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:02:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 18:02:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 18:02:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 18:02:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 18:02:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 18:02:36,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:36,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775162823] [2023-11-22 18:02:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775162823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:36,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:02:36,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:02:36,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920295968] [2023-11-22 18:02:36,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:36,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:02:36,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:36,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:02:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:02:36,145 INFO L87 Difference]: Start difference. First operand 1221 states and 2043 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:02:42,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:42,209 INFO L93 Difference]: Finished difference Result 4130 states and 7210 transitions. [2023-11-22 18:02:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:02:42,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 119 [2023-11-22 18:02:42,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:42,221 INFO L225 Difference]: With dead ends: 4130 [2023-11-22 18:02:42,222 INFO L226 Difference]: Without dead ends: 2990 [2023-11-22 18:02:42,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:02:42,228 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 4345 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 1336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4355 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 5262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1336 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:42,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4355 Valid, 1413 Invalid, 5262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1336 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-22 18:02:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2023-11-22 18:02:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2316. [2023-11-22 18:02:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 1835 states have (on average 1.673024523160763) internal successors, (3070), 1891 states have internal predecessors, (3070), 383 states have call successors, (383), 96 states have call predecessors, (383), 97 states have return successors, (443), 376 states have call predecessors, (443), 377 states have call successors, (443) [2023-11-22 18:02:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3896 transitions. [2023-11-22 18:02:42,592 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3896 transitions. Word has length 119 [2023-11-22 18:02:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:42,593 INFO L495 AbstractCegarLoop]: Abstraction has 2316 states and 3896 transitions. [2023-11-22 18:02:42,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:02:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3896 transitions. [2023-11-22 18:02:42,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-22 18:02:42,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:42,597 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:42,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 18:02:42,597 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:42,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash -701163758, now seen corresponding path program 1 times [2023-11-22 18:02:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979549857] [2023-11-22 18:02:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:42,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:02:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:02:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:02:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:02:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 18:02:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 18:02:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:02:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 18:02:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:02:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 18:02:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979549857] [2023-11-22 18:02:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979549857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:42,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:02:42,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:02:42,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665519824] [2023-11-22 18:02:42,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:42,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:02:42,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:02:42,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:02:42,865 INFO L87 Difference]: Start difference. First operand 2316 states and 3896 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:02:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:49,309 INFO L93 Difference]: Finished difference Result 7993 states and 14212 transitions. [2023-11-22 18:02:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:02:49,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2023-11-22 18:02:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:49,334 INFO L225 Difference]: With dead ends: 7993 [2023-11-22 18:02:49,334 INFO L226 Difference]: Without dead ends: 5758 [2023-11-22 18:02:49,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:02:49,347 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 4336 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 4001 mSolverCounterSat, 1299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 5300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1299 IncrementalHoareTripleChecker+Valid, 4001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:49,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4347 Valid, 1518 Invalid, 5300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1299 Valid, 4001 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-22 18:02:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2023-11-22 18:02:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 4516. [2023-11-22 18:02:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3575 states have (on average 1.666013986013986) internal successors, (5956), 3685 states have internal predecessors, (5956), 751 states have call successors, (751), 186 states have call predecessors, (751), 189 states have return successors, (944), 740 states have call predecessors, (944), 741 states have call successors, (944) [2023-11-22 18:02:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 7651 transitions. [2023-11-22 18:02:50,095 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 7651 transitions. Word has length 120 [2023-11-22 18:02:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:50,095 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 7651 transitions. [2023-11-22 18:02:50,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:02:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 7651 transitions. [2023-11-22 18:02:50,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-22 18:02:50,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:50,099 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:50,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 18:02:50,100 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:50,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1874866202, now seen corresponding path program 1 times [2023-11-22 18:02:50,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:50,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861831139] [2023-11-22 18:02:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:50,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:02:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:02:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:02:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:02:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 18:02:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-22 18:02:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 18:02:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:02:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 18:02:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 18:02:50,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:50,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861831139] [2023-11-22 18:02:50,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861831139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:50,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:02:50,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:02:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467660652] [2023-11-22 18:02:50,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:50,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:02:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:02:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:02:50,392 INFO L87 Difference]: Start difference. First operand 4516 states and 7651 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:02:57,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:02:57,799 INFO L93 Difference]: Finished difference Result 15763 states and 28913 transitions. [2023-11-22 18:02:57,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:02:57,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 121 [2023-11-22 18:02:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:02:57,853 INFO L225 Difference]: With dead ends: 15763 [2023-11-22 18:02:57,853 INFO L226 Difference]: Without dead ends: 11328 [2023-11-22 18:02:57,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:02:57,880 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 4373 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 4019 mSolverCounterSat, 1306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 5325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1306 IncrementalHoareTripleChecker+Valid, 4019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:02:57,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4385 Valid, 1547 Invalid, 5325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1306 Valid, 4019 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-22 18:02:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11328 states. [2023-11-22 18:02:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11328 to 8926. [2023-11-22 18:02:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8926 states, 7063 states have (on average 1.6579357213648591) internal successors, (11710), 7281 states have internal predecessors, (11710), 1489 states have call successors, (1489), 366 states have call predecessors, (1489), 373 states have return successors, (2091), 1470 states have call predecessors, (2091), 1471 states have call successors, (2091) [2023-11-22 18:02:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8926 states to 8926 states and 15290 transitions. [2023-11-22 18:02:59,172 INFO L78 Accepts]: Start accepts. Automaton has 8926 states and 15290 transitions. Word has length 121 [2023-11-22 18:02:59,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:02:59,173 INFO L495 AbstractCegarLoop]: Abstraction has 8926 states and 15290 transitions. [2023-11-22 18:02:59,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:02:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 8926 states and 15290 transitions. [2023-11-22 18:02:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-22 18:02:59,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:02:59,177 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:02:59,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 18:02:59,177 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:02:59,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:02:59,178 INFO L85 PathProgramCache]: Analyzing trace with hash 356266903, now seen corresponding path program 1 times [2023-11-22 18:02:59,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:02:59,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813741830] [2023-11-22 18:02:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:02:59,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:02:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:02:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:02:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:02:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:02:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:02:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:02:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:02:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:02:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:02:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 18:02:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 18:02:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 18:02:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:02:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 18:02:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:02:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813741830] [2023-11-22 18:02:59,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813741830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:02:59,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:02:59,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:02:59,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943910701] [2023-11-22 18:02:59,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:02:59,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:02:59,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:02:59,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:02:59,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:02:59,440 INFO L87 Difference]: Start difference. First operand 8926 states and 15290 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:03:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:03:09,096 INFO L93 Difference]: Finished difference Result 31347 states and 60460 transitions. [2023-11-22 18:03:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:03:09,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2023-11-22 18:03:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:03:09,234 INFO L225 Difference]: With dead ends: 31347 [2023-11-22 18:03:09,234 INFO L226 Difference]: Without dead ends: 22502 [2023-11-22 18:03:09,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:03:09,324 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 4391 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 1318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 5369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1318 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:03:09,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4404 Valid, 1618 Invalid, 5369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1318 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-22 18:03:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22502 states. [2023-11-22 18:03:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22502 to 17756. [2023-11-22 18:03:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17756 states, 14047 states have (on average 1.6493201395315726) internal successors, (23168), 14481 states have internal predecessors, (23168), 2967 states have call successors, (2967), 726 states have call predecessors, (2967), 741 states have return successors, (4834), 2932 states have call predecessors, (4834), 2933 states have call successors, (4834) [2023-11-22 18:03:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17756 states to 17756 states and 30969 transitions. [2023-11-22 18:03:12,232 INFO L78 Accepts]: Start accepts. Automaton has 17756 states and 30969 transitions. Word has length 122 [2023-11-22 18:03:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:03:12,233 INFO L495 AbstractCegarLoop]: Abstraction has 17756 states and 30969 transitions. [2023-11-22 18:03:12,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:03:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 17756 states and 30969 transitions. [2023-11-22 18:03:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-22 18:03:12,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:03:12,238 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:03:12,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 18:03:12,238 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:03:12,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:03:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash 763119627, now seen corresponding path program 1 times [2023-11-22 18:03:12,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:03:12,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715098721] [2023-11-22 18:03:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:03:12,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:03:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:03:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:03:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:03:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:03:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:03:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:03:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:03:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:03:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:03:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 18:03:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:03:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 18:03:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 18:03:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 18:03:12,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:03:12,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715098721] [2023-11-22 18:03:12,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715098721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:03:12,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:03:12,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:03:12,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915872829] [2023-11-22 18:03:12,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:03:12,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:03:12,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:03:12,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:03:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:03:12,515 INFO L87 Difference]: Start difference. First operand 17756 states and 30969 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:03:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:03:26,778 INFO L93 Difference]: Finished difference Result 62559 states and 130475 transitions. [2023-11-22 18:03:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:03:26,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2023-11-22 18:03:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:03:27,083 INFO L225 Difference]: With dead ends: 62559 [2023-11-22 18:03:27,083 INFO L226 Difference]: Without dead ends: 44884 [2023-11-22 18:03:27,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:03:27,314 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 4426 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 4052 mSolverCounterSat, 1331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 5383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1331 IncrementalHoareTripleChecker+Valid, 4052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:03:27,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 1656 Invalid, 5383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1331 Valid, 4052 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-22 18:03:27,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44884 states. [2023-11-22 18:03:32,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44884 to 35426. [2023-11-22 18:03:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35426 states, 28023 states have (on average 1.6404382114691503) internal successors, (45970), 28889 states have internal predecessors, (45970), 5925 states have call successors, (5925), 1446 states have call predecessors, (5925), 1477 states have return successors, (11741), 5858 states have call predecessors, (11741), 5859 states have call successors, (11741) [2023-11-22 18:03:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35426 states to 35426 states and 63636 transitions. [2023-11-22 18:03:33,234 INFO L78 Accepts]: Start accepts. Automaton has 35426 states and 63636 transitions. Word has length 123 [2023-11-22 18:03:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:03:33,234 INFO L495 AbstractCegarLoop]: Abstraction has 35426 states and 63636 transitions. [2023-11-22 18:03:33,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-22 18:03:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 35426 states and 63636 transitions. [2023-11-22 18:03:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-22 18:03:33,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:03:33,242 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:03:33,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-22 18:03:33,242 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:03:33,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:03:33,243 INFO L85 PathProgramCache]: Analyzing trace with hash 747600909, now seen corresponding path program 1 times [2023-11-22 18:03:33,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:03:33,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719195601] [2023-11-22 18:03:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:03:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:03:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:03:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:03:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:03:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:03:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:03:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:03:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:03:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:03:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:03:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 18:03:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:03:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 18:03:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 18:03:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:03:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 18:03:33,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:03:33,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719195601] [2023-11-22 18:03:33,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719195601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:03:33,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:03:33,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 18:03:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329995119] [2023-11-22 18:03:33,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:03:33,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:03:33,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:03:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:03:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:03:33,795 INFO L87 Difference]: Start difference. First operand 35426 states and 63636 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:03:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:03:47,954 INFO L93 Difference]: Finished difference Result 82176 states and 160074 transitions. [2023-11-22 18:03:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 18:03:47,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2023-11-22 18:03:47,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:03:48,337 INFO L225 Difference]: With dead ends: 82176 [2023-11-22 18:03:48,338 INFO L226 Difference]: Without dead ends: 46862 [2023-11-22 18:03:48,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-22 18:03:48,611 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1468 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 6113 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 6513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 6113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:03:48,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 3240 Invalid, 6513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [400 Valid, 6113 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-22 18:03:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46862 states.