./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.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_product24.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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 21:29:41,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 21:29:41,646 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 21:29:41,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 21:29:41,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 21:29:41,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 21:29:41,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 21:29:41,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 21:29:41,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 21:29:41,673 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 21:29:41,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 21:29:41,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 21:29:41,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 21:29:41,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 21:29:41,675 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 21:29:41,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 21:29:41,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 21:29:41,676 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 21:29:41,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 21:29:41,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 21:29:41,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 21:29:41,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 21:29:41,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 21:29:41,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 21:29:41,678 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 21:29:41,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 21:29:41,678 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 21:29:41,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 21:29:41,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 21:29:41,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 21:29:41,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 21:29:41,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:29:41,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 21:29:41,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 21:29:41,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 21:29:41,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 21:29:41,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 21:29:41,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 21:29:41,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 21:29:41,681 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 21:29:41,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 21:29:41,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 21:29:41,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 21:29:41,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 21:29:41,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 21:29:41,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 21:29:41,907 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 21:29:41,907 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 21:29:41,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2023-11-22 21:29:42,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 21:29:43,233 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 21:29:43,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product24.cil.c [2023-11-22 21:29:43,248 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e4cee1a/f67e72e25f724d069f932a28e534b5fe/FLAG1831c6cb0 [2023-11-22 21:29:43,261 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e4cee1a/f67e72e25f724d069f932a28e534b5fe [2023-11-22 21:29:43,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 21:29:43,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 21:29:43,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 21:29:43,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 21:29:43,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 21:29:43,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a14d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43, skipping insertion in model container [2023-11-22 21:29:43,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,330 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 21:29:43,645 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_product24.cil.c[51490,51503] [2023-11-22 21:29:43,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:29:43,680 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 21:29:43,687 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-11-22 21:29:43,688 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [414] [2023-11-22 21:29:43,688 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [434] [2023-11-22 21:29:43,689 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2095] [2023-11-22 21:29:43,689 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2449] [2023-11-22 21:29:43,689 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2458] [2023-11-22 21:29:43,689 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2549] [2023-11-22 21:29:43,689 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3210] [2023-11-22 21:29:43,689 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3299] [2023-11-22 21:29:43,690 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3417] [2023-11-22 21:29:43,748 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_product24.cil.c[51490,51503] [2023-11-22 21:29:43,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:29:43,780 INFO L206 MainTranslator]: Completed translation [2023-11-22 21:29:43,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43 WrapperNode [2023-11-22 21:29:43,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 21:29:43,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 21:29:43,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 21:29:43,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 21:29:43,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,836 INFO L138 Inliner]: procedures = 96, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 893 [2023-11-22 21:29:43,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 21:29:43,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 21:29:43,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 21:29:43,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 21:29:43,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,856 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,879 INFO L189 HeapSplitter]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4] [2023-11-22 21:29:43,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 21:29:43,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 21:29:43,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 21:29:43,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 21:29:43,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (1/1) ... [2023-11-22 21:29:43,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:29:43,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:43,962 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 21:29:43,964 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 21:29:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-22 21:29:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-22 21:29:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 21:29:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-22 21:29:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-22 21:29:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-22 21:29:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-22 21:29:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-22 21:29:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-22 21:29:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-22 21:29:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-22 21:29:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-22 21:29:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-22 21:29:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-22 21:29:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-22 21:29:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-22 21:29:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-22 21:29:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-22 21:29:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-22 21:29:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-22 21:29:44,039 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-22 21:29:44,039 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-22 21:29:44,039 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-22 21:29:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-22 21:29:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-22 21:29:44,040 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-22 21:29:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-22 21:29:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-22 21:29:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-22 21:29:44,045 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-22 21:29:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-22 21:29:44,045 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-22 21:29:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-22 21:29:44,045 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-22 21:29:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-22 21:29:44,046 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-22 21:29:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-22 21:29:44,046 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-22 21:29:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-22 21:29:44,046 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-22 21:29:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-22 21:29:44,046 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-22 21:29:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-22 21:29:44,047 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-22 21:29:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-22 21:29:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 21:29:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 21:29:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 21:29:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 21:29:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 21:29:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 21:29:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 21:29:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 21:29:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 21:29:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 21:29:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-22 21:29:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-22 21:29:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-22 21:29:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-22 21:29:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-22 21:29:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-22 21:29:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-22 21:29:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-22 21:29:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-22 21:29:44,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-22 21:29:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-22 21:29:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-22 21:29:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-22 21:29:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-22 21:29:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-22 21:29:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-22 21:29:44,058 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-22 21:29:44,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-22 21:29:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 21:29:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 21:29:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 21:29:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 21:29:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-22 21:29:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-22 21:29:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-11-22 21:29:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-11-22 21:29:44,243 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 21:29:44,247 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 21:29:44,910 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 21:29:45,006 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 21:29:45,007 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-22 21:29:45,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:29:45 BoogieIcfgContainer [2023-11-22 21:29:45,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 21:29:45,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 21:29:45,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 21:29:45,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 21:29:45,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:29:43" (1/3) ... [2023-11-22 21:29:45,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2581c929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:29:45, skipping insertion in model container [2023-11-22 21:29:45,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:29:43" (2/3) ... [2023-11-22 21:29:45,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2581c929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:29:45, skipping insertion in model container [2023-11-22 21:29:45,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:29:45" (3/3) ... [2023-11-22 21:29:45,015 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2023-11-22 21:29:45,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 21:29:45,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 21:29:45,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 21:29:45,094 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;@2bb44377, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 21:29:45,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 21:29:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 604 states, 463 states have (on average 1.7062634989200864) internal successors, (790), 483 states have internal predecessors, (790), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-22 21:29:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-22 21:29:45,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:45,124 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:45,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:45,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1784768629, now seen corresponding path program 1 times [2023-11-22 21:29:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411247862] [2023-11-22 21:29:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:29:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:29:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 21:29:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 21:29:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:29:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 21:29:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 21:29:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 21:29:46,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:46,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411247862] [2023-11-22 21:29:46,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411247862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:46,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629649814] [2023-11-22 21:29:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:46,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:46,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:46,266 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 21:29:46,300 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 21:29:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:46,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:46,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:29:46,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:46,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629649814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:46,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:46,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 21:29:46,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661941469] [2023-11-22 21:29:46,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:46,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:46,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:46,650 INFO L87 Difference]: Start difference. First operand has 604 states, 463 states have (on average 1.7062634989200864) internal successors, (790), 483 states have internal predecessors, (790), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:46,783 INFO L93 Difference]: Finished difference Result 1213 states and 2042 transitions. [2023-11-22 21:29:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:46,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-11-22 21:29:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:46,796 INFO L225 Difference]: With dead ends: 1213 [2023-11-22 21:29:46,796 INFO L226 Difference]: Without dead ends: 607 [2023-11-22 21:29:46,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:29:46,804 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 26 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:46,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2889 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:46,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-11-22 21:29:46,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2023-11-22 21:29:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 468 states have (on average 1.6837606837606838) internal successors, (788), 486 states have internal predecessors, (788), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-22 21:29:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1005 transitions. [2023-11-22 21:29:46,857 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1005 transitions. Word has length 84 [2023-11-22 21:29:46,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:46,857 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 1005 transitions. [2023-11-22 21:29:46,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1005 transitions. [2023-11-22 21:29:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-22 21:29:46,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:46,861 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] [2023-11-22 21:29:46,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 21:29:47,073 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 21:29:47,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:47,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1110920812, now seen corresponding path program 1 times [2023-11-22 21:29:47,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:47,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802765426] [2023-11-22 21:29:47,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:47,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 21:29:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 21:29:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:29:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:29:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 21:29:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,467 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 21:29:47,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:47,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802765426] [2023-11-22 21:29:47,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802765426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:47,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770305681] [2023-11-22 21:29:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:47,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:47,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:47,485 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 21:29:47,500 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 21:29:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:47,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:47,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:47,800 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 21:29:47,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770305681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:47,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-22 21:29:47,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688902186] [2023-11-22 21:29:47,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:47,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:47,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:47,803 INFO L87 Difference]: Start difference. First operand 607 states and 1005 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:47,966 INFO L93 Difference]: Finished difference Result 1224 states and 2028 transitions. [2023-11-22 21:29:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:47,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2023-11-22 21:29:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:47,974 INFO L225 Difference]: With dead ends: 1224 [2023-11-22 21:29:47,974 INFO L226 Difference]: Without dead ends: 622 [2023-11-22 21:29:47,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:29:47,978 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 114 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:47,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 5667 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-11-22 21:29:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 619. [2023-11-22 21:29:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 477 states have (on average 1.6813417190775681) internal successors, (802), 497 states have internal predecessors, (802), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2023-11-22 21:29:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1026 transitions. [2023-11-22 21:29:48,007 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1026 transitions. Word has length 74 [2023-11-22 21:29:48,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:48,007 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1026 transitions. [2023-11-22 21:29:48,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1026 transitions. [2023-11-22 21:29:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-22 21:29:48,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:48,010 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:48,025 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 21:29:48,224 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 21:29:48,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:48,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1160837612, now seen corresponding path program 1 times [2023-11-22 21:29:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549116770] [2023-11-22 21:29:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 21:29:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 21:29:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:29:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 21:29:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 21:29:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 21:29:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:29:48,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:48,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549116770] [2023-11-22 21:29:48,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549116770] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:48,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474732659] [2023-11-22 21:29:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:48,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:48,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:48,812 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 21:29:48,813 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 21:29:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:49,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:29:49,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:49,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474732659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:49,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:49,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 21:29:49,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724353149] [2023-11-22 21:29:49,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:49,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:49,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:49,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:49,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:29:49,145 INFO L87 Difference]: Start difference. First operand 619 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:49,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:49,299 INFO L93 Difference]: Finished difference Result 1242 states and 2059 transitions. [2023-11-22 21:29:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:49,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2023-11-22 21:29:49,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:49,303 INFO L225 Difference]: With dead ends: 1242 [2023-11-22 21:29:49,303 INFO L226 Difference]: Without dead ends: 630 [2023-11-22 21:29:49,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:49,305 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 125 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 5655 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:49,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 5655 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-22 21:29:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 619. [2023-11-22 21:29:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 477 states have (on average 1.6813417190775681) internal successors, (802), 497 states have internal predecessors, (802), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2023-11-22 21:29:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1026 transitions. [2023-11-22 21:29:49,322 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1026 transitions. Word has length 87 [2023-11-22 21:29:49,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:49,322 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1026 transitions. [2023-11-22 21:29:49,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:49,323 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1026 transitions. [2023-11-22 21:29:49,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-22 21:29:49,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:49,324 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] [2023-11-22 21:29:49,351 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 21:29:49,537 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 21:29:49,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:49,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:49,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1406522373, now seen corresponding path program 1 times [2023-11-22 21:29:49,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:49,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537623337] [2023-11-22 21:29:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:49,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:29:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 21:29:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 21:29:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 21:29:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:29:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 21:29:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 21:29:49,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537623337] [2023-11-22 21:29:49,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537623337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469077447] [2023-11-22 21:29:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:49,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:49,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:49,714 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 21:29:49,738 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 21:29:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:49,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:49,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:29:49,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:49,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469077447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:49,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:49,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:29:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505448086] [2023-11-22 21:29:49,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:49,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:49,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:49,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:49,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:29:49,951 INFO L87 Difference]: Start difference. First operand 619 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:29:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:50,031 INFO L93 Difference]: Finished difference Result 1246 states and 2063 transitions. [2023-11-22 21:29:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:50,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2023-11-22 21:29:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:50,036 INFO L225 Difference]: With dead ends: 1246 [2023-11-22 21:29:50,036 INFO L226 Difference]: Without dead ends: 630 [2023-11-22 21:29:50,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:29:50,040 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 20 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:50,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2872 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-22 21:29:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 628. [2023-11-22 21:29:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 485 states have (on average 1.6721649484536083) internal successors, (811), 505 states have internal predecessors, (811), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2023-11-22 21:29:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1034 transitions. [2023-11-22 21:29:50,058 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1034 transitions. Word has length 75 [2023-11-22 21:29:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:50,059 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1034 transitions. [2023-11-22 21:29:50,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:29:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1034 transitions. [2023-11-22 21:29:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 21:29:50,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:50,061 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] [2023-11-22 21:29:50,092 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 21:29:50,274 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 21:29:50,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:50,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1670932456, now seen corresponding path program 1 times [2023-11-22 21:29:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:50,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915137643] [2023-11-22 21:29:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:50,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 21:29:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 21:29:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:29:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:29:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 21:29:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,517 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 21:29:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:50,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915137643] [2023-11-22 21:29:50,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915137643] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:50,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925875310] [2023-11-22 21:29:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:50,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:50,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:50,519 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 21:29:50,520 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 21:29:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:50,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:50,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:50,805 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 21:29:50,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:50,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925875310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:50,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:50,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-22 21:29:50,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997326499] [2023-11-22 21:29:50,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:50,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:50,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:50,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:29:50,807 INFO L87 Difference]: Start difference. First operand 628 states and 1034 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:50,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:50,934 INFO L93 Difference]: Finished difference Result 1251 states and 2062 transitions. [2023-11-22 21:29:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:50,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 76 [2023-11-22 21:29:50,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:50,938 INFO L225 Difference]: With dead ends: 1251 [2023-11-22 21:29:50,938 INFO L226 Difference]: Without dead ends: 641 [2023-11-22 21:29:50,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:50,941 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 136 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 5643 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:50,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 5643 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-22 21:29:50,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 628. [2023-11-22 21:29:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 485 states have (on average 1.6721649484536083) internal successors, (811), 505 states have internal predecessors, (811), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2023-11-22 21:29:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1034 transitions. [2023-11-22 21:29:50,955 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1034 transitions. Word has length 76 [2023-11-22 21:29:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:50,955 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1034 transitions. [2023-11-22 21:29:50,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:50,956 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1034 transitions. [2023-11-22 21:29:50,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-22 21:29:50,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:50,957 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:50,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-22 21:29:51,169 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 21:29:51,169 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:51,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:51,170 INFO L85 PathProgramCache]: Analyzing trace with hash 519194320, now seen corresponding path program 1 times [2023-11-22 21:29:51,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:51,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549971978] [2023-11-22 21:29:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:51,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 21:29:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 21:29:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:29:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 21:29:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:29:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 21:29:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:29:51,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549971978] [2023-11-22 21:29:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549971978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516083660] [2023-11-22 21:29:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:51,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:51,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:51,680 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 21:29:51,681 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 21:29:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:51,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:51,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:29:51,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516083660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:51,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:51,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-22 21:29:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331396775] [2023-11-22 21:29:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:51,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:51,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:51,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:51,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:29:51,955 INFO L87 Difference]: Start difference. First operand 628 states and 1034 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:52,137 INFO L93 Difference]: Finished difference Result 1290 states and 2142 transitions. [2023-11-22 21:29:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:52,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2023-11-22 21:29:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:52,141 INFO L225 Difference]: With dead ends: 1290 [2023-11-22 21:29:52,141 INFO L226 Difference]: Without dead ends: 680 [2023-11-22 21:29:52,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:29:52,144 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 165 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:52,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2717 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:52,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-11-22 21:29:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 672. [2023-11-22 21:29:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-22 21:29:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-11-22 21:29:52,181 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 89 [2023-11-22 21:29:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:52,181 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-11-22 21:29:52,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-11-22 21:29:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-22 21:29:52,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:52,183 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] [2023-11-22 21:29:52,195 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 21:29:52,395 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 21:29:52,396 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:52,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1216356592, now seen corresponding path program 1 times [2023-11-22 21:29:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:52,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934855232] [2023-11-22 21:29:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:52,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 21:29:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 21:29:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:29:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 21:29:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 21:29:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,609 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 21:29:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934855232] [2023-11-22 21:29:52,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934855232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:52,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666917227] [2023-11-22 21:29:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:52,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:52,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:52,611 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 21:29:52,646 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 21:29:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:52,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:52,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:52,924 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 21:29:52,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:52,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666917227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:52,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:52,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-22 21:29:52,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513273039] [2023-11-22 21:29:52,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:52,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:52,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:52,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:52,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:52,926 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:53,120 INFO L93 Difference]: Finished difference Result 1349 states and 2241 transitions. [2023-11-22 21:29:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:53,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-22 21:29:53,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:53,124 INFO L225 Difference]: With dead ends: 1349 [2023-11-22 21:29:53,124 INFO L226 Difference]: Without dead ends: 695 [2023-11-22 21:29:53,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:53,126 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 131 mSDsluCounter, 5613 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6564 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:53,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6564 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:53,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-11-22 21:29:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 672. [2023-11-22 21:29:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-22 21:29:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-11-22 21:29:53,142 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 78 [2023-11-22 21:29:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:53,142 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-11-22 21:29:53,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-11-22 21:29:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-22 21:29:53,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:53,144 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:29:53,170 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 21:29:53,356 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 21:29:53,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:53,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 681414586, now seen corresponding path program 1 times [2023-11-22 21:29:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090477924] [2023-11-22 21:29:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:29:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 21:29:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:29:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:29:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 21:29:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 21:29:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 21:29:53,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:53,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090477924] [2023-11-22 21:29:53,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090477924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:53,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990002871] [2023-11-22 21:29:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:53,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:53,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:53,860 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 21:29:53,906 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 21:29:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:54,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:54,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:29:54,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:54,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990002871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:54,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:54,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 21:29:54,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864101877] [2023-11-22 21:29:54,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:54,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:54,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:54,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:54,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:29:54,230 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:54,466 INFO L93 Difference]: Finished difference Result 1349 states and 2241 transitions. [2023-11-22 21:29:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:54,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-11-22 21:29:54,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:54,470 INFO L225 Difference]: With dead ends: 1349 [2023-11-22 21:29:54,470 INFO L226 Difference]: Without dead ends: 695 [2023-11-22 21:29:54,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:29:54,475 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 141 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6552 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:54,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6552 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 21:29:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-11-22 21:29:54,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 672. [2023-11-22 21:29:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-22 21:29:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-11-22 21:29:54,497 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 91 [2023-11-22 21:29:54,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:54,497 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-11-22 21:29:54,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:29:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-11-22 21:29:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-22 21:29:54,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:54,499 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] [2023-11-22 21:29:54,532 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 21:29:54,711 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 21:29:54,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:54,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1800032555, now seen corresponding path program 1 times [2023-11-22 21:29:54,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:54,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780093357] [2023-11-22 21:29:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:54,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:29:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 21:29:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 21:29:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:29:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:54,949 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 21:29:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780093357] [2023-11-22 21:29:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780093357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786001732] [2023-11-22 21:29:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:54,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:54,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:54,960 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 21:29:54,961 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 21:29:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:29:55,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:55,249 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 21:29:55,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:55,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786001732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:55,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:55,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-22 21:29:55,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088092958] [2023-11-22 21:29:55,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:55,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:29:55,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:29:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:29:55,251 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:55,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:55,419 INFO L93 Difference]: Finished difference Result 1341 states and 2227 transitions. [2023-11-22 21:29:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:29:55,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2023-11-22 21:29:55,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:55,423 INFO L225 Difference]: With dead ends: 1341 [2023-11-22 21:29:55,423 INFO L226 Difference]: Without dead ends: 687 [2023-11-22 21:29:55,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-22 21:29:55,425 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 151 mSDsluCounter, 5589 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6540 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:55,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6540 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-22 21:29:55,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 672. [2023-11-22 21:29:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.6931818181818181) internal successors, (894), 548 states have internal predecessors, (894), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-22 21:29:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1116 transitions. [2023-11-22 21:29:55,437 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1116 transitions. Word has length 80 [2023-11-22 21:29:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:55,438 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1116 transitions. [2023-11-22 21:29:55,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1116 transitions. [2023-11-22 21:29:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-22 21:29:55,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:55,439 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:55,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-22 21:29:55,650 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 21:29:55,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:55,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 817387554, now seen corresponding path program 1 times [2023-11-22 21:29:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140671896] [2023-11-22 21:29:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:55,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:29:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 21:29:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:29:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 21:29:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 21:29:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 21:29:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 21:29:56,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140671896] [2023-11-22 21:29:56,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140671896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741239826] [2023-11-22 21:29:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:56,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:56,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:56,091 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 21:29:56,116 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 21:29:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:56,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 21:29:56,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:56,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741239826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:56,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:56,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 21:29:56,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201513044] [2023-11-22 21:29:56,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:56,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:56,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:56,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:56,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:56,366 INFO L87 Difference]: Start difference. First operand 672 states and 1116 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:56,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:56,438 INFO L93 Difference]: Finished difference Result 1315 states and 2189 transitions. [2023-11-22 21:29:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2023-11-22 21:29:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:56,441 INFO L225 Difference]: With dead ends: 1315 [2023-11-22 21:29:56,441 INFO L226 Difference]: Without dead ends: 672 [2023-11-22 21:29:56,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:29:56,444 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 35 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:56,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2870 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:29:56,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-11-22 21:29:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2023-11-22 21:29:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 528 states have (on average 1.683712121212121) internal successors, (889), 548 states have internal predecessors, (889), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2023-11-22 21:29:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1111 transitions. [2023-11-22 21:29:56,460 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1111 transitions. Word has length 92 [2023-11-22 21:29:56,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:56,461 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1111 transitions. [2023-11-22 21:29:56,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 21:29:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1111 transitions. [2023-11-22 21:29:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-22 21:29:56,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:56,462 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] [2023-11-22 21:29:56,474 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 21:29:56,674 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 21:29:56,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:56,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:56,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2108691594, now seen corresponding path program 1 times [2023-11-22 21:29:56,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:56,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464475835] [2023-11-22 21:29:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:29:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 21:29:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-22 21:29:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 21:29:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:56,888 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 21:29:56,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:56,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464475835] [2023-11-22 21:29:56,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464475835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:56,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994570180] [2023-11-22 21:29:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:56,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:56,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:56,890 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 21:29:56,924 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 21:29:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:57,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:57,162 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 21:29:57,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994570180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:57,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:57,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-22 21:29:57,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472914453] [2023-11-22 21:29:57,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:57,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:57,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:57,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:29:57,164 INFO L87 Difference]: Start difference. First operand 672 states and 1111 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:57,298 INFO L93 Difference]: Finished difference Result 1283 states and 2121 transitions. [2023-11-22 21:29:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:57,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2023-11-22 21:29:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:57,305 INFO L225 Difference]: With dead ends: 1283 [2023-11-22 21:29:57,305 INFO L226 Difference]: Without dead ends: 696 [2023-11-22 21:29:57,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:29:57,309 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 114 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5679 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:57,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 5679 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-22 21:29:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 684. [2023-11-22 21:29:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 537 states have (on average 1.681564245810056) internal successors, (903), 559 states have internal predecessors, (903), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2023-11-22 21:29:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1131 transitions. [2023-11-22 21:29:57,325 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1131 transitions. Word has length 81 [2023-11-22 21:29:57,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:57,325 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1131 transitions. [2023-11-22 21:29:57,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1131 transitions. [2023-11-22 21:29:57,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-22 21:29:57,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:57,328 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] [2023-11-22 21:29:57,356 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 21:29:57,542 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 21:29:57,542 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:57,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:57,543 INFO L85 PathProgramCache]: Analyzing trace with hash 246843287, now seen corresponding path program 1 times [2023-11-22 21:29:57,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:57,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575660542] [2023-11-22 21:29:57,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:57,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 21:29:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:29:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:29:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 21:29:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,757 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 21:29:57,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:57,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575660542] [2023-11-22 21:29:57,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575660542] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:57,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544623191] [2023-11-22 21:29:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:57,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:57,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:57,759 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 21:29:57,761 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 21:29:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:57,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:29:57,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:58,036 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 21:29:58,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544623191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:58,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:58,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-22 21:29:58,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913024818] [2023-11-22 21:29:58,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:58,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:29:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:29:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:29:58,039 INFO L87 Difference]: Start difference. First operand 684 states and 1131 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:58,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:58,165 INFO L93 Difference]: Finished difference Result 1291 states and 2135 transitions. [2023-11-22 21:29:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:29:58,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2023-11-22 21:29:58,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:58,170 INFO L225 Difference]: With dead ends: 1291 [2023-11-22 21:29:58,170 INFO L226 Difference]: Without dead ends: 704 [2023-11-22 21:29:58,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:29:58,173 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 125 mSDsluCounter, 4704 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:58,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 5667 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-11-22 21:29:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 684. [2023-11-22 21:29:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 537 states have (on average 1.681564245810056) internal successors, (903), 559 states have internal predecessors, (903), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2023-11-22 21:29:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1131 transitions. [2023-11-22 21:29:58,186 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1131 transitions. Word has length 82 [2023-11-22 21:29:58,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:58,186 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1131 transitions. [2023-11-22 21:29:58,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 21:29:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1131 transitions. [2023-11-22 21:29:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-22 21:29:58,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:58,188 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 21:29:58,200 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 21:29:58,400 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 21:29:58,400 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:58,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash 795038351, now seen corresponding path program 1 times [2023-11-22 21:29:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:58,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780696224] [2023-11-22 21:29:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:58,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:29:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 21:29:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:29:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:29:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 21:29:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,589 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 21:29:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780696224] [2023-11-22 21:29:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780696224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843197505] [2023-11-22 21:29:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:58,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:58,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:58,605 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 21:29:58,663 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 21:29:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:58,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:58,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:58,877 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 21:29:58,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:58,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843197505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:58,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:58,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 21:29:58,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429327247] [2023-11-22 21:29:58,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:58,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:58,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:29:58,879 INFO L87 Difference]: Start difference. First operand 684 states and 1131 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:29:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:58,945 INFO L93 Difference]: Finished difference Result 1335 states and 2217 transitions. [2023-11-22 21:29:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 21:29:58,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2023-11-22 21:29:58,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:58,949 INFO L225 Difference]: With dead ends: 1335 [2023-11-22 21:29:58,949 INFO L226 Difference]: Without dead ends: 684 [2023-11-22 21:29:58,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:58,952 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 10 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:58,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2872 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:29:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-11-22 21:29:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2023-11-22 21:29:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 537 states have (on average 1.675977653631285) internal successors, (900), 559 states have internal predecessors, (900), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2023-11-22 21:29:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1128 transitions. [2023-11-22 21:29:58,967 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1128 transitions. Word has length 82 [2023-11-22 21:29:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:58,967 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1128 transitions. [2023-11-22 21:29:58,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:29:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1128 transitions. [2023-11-22 21:29:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-22 21:29:58,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:58,969 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] [2023-11-22 21:29:58,996 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 21:29:59,181 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 21:29:59,181 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:29:59,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:29:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2019705074, now seen corresponding path program 1 times [2023-11-22 21:29:59,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:29:59,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381528647] [2023-11-22 21:29:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:59,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:29:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:29:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:29:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:29:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:29:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:29:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:29:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:29:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 21:29:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 21:29:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,368 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 21:29:59,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:29:59,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381528647] [2023-11-22 21:29:59,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381528647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:29:59,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708623012] [2023-11-22 21:29:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:29:59,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:29:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:29:59,369 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 21:29:59,393 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 21:29:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:29:59,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:29:59,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:29:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:29:59,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:29:59,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708623012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:29:59,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:29:59,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 21:29:59,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072023220] [2023-11-22 21:29:59,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:29:59,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:29:59,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:29:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:29:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:29:59,621 INFO L87 Difference]: Start difference. First operand 684 states and 1128 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:29:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:29:59,766 INFO L93 Difference]: Finished difference Result 1331 states and 2212 transitions. [2023-11-22 21:29:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:29:59,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2023-11-22 21:29:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:29:59,770 INFO L225 Difference]: With dead ends: 1331 [2023-11-22 21:29:59,770 INFO L226 Difference]: Without dead ends: 744 [2023-11-22 21:29:59,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:29:59,773 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 235 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:29:59,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2697 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:29:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-11-22 21:29:59,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 728. [2023-11-22 21:29:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 580 states have (on average 1.6948275862068964) internal successors, (983), 602 states have internal predecessors, (983), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2023-11-22 21:29:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1208 transitions. [2023-11-22 21:29:59,787 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1208 transitions. Word has length 83 [2023-11-22 21:29:59,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:29:59,788 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1208 transitions. [2023-11-22 21:29:59,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:29:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1208 transitions. [2023-11-22 21:29:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 21:29:59,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:29:59,790 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:29:59,805 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 21:30:00,003 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 21:30:00,003 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:00,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1908194401, now seen corresponding path program 1 times [2023-11-22 21:30:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:00,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402440952] [2023-11-22 21:30:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:30:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 21:30:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 21:30:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 21:30:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 21:30:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:30:00,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:00,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402440952] [2023-11-22 21:30:00,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402440952] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:00,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135256907] [2023-11-22 21:30:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:00,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:00,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:00,479 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 21:30:00,502 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 21:30:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:00,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:30:00,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 21:30:00,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:00,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135256907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:00,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:00,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-22 21:30:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099818405] [2023-11-22 21:30:00,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:30:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:00,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:30:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:30:00,808 INFO L87 Difference]: Start difference. First operand 728 states and 1208 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:30:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:00,965 INFO L93 Difference]: Finished difference Result 1345 states and 2226 transitions. [2023-11-22 21:30:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:30:00,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-11-22 21:30:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:00,970 INFO L225 Difference]: With dead ends: 1345 [2023-11-22 21:30:00,970 INFO L226 Difference]: Without dead ends: 758 [2023-11-22 21:30:00,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:30:00,974 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 132 mSDsluCounter, 5599 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6547 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:00,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6547 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:00,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2023-11-22 21:30:00,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 728. [2023-11-22 21:30:00,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 580 states have (on average 1.6948275862068964) internal successors, (983), 602 states have internal predecessors, (983), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2023-11-22 21:30:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1208 transitions. [2023-11-22 21:30:00,988 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1208 transitions. Word has length 95 [2023-11-22 21:30:00,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:00,988 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1208 transitions. [2023-11-22 21:30:00,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:30:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1208 transitions. [2023-11-22 21:30:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-22 21:30:00,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:00,990 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 21:30:01,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-22 21:30:01,200 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 21:30:01,200 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:01,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:01,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1453236034, now seen corresponding path program 1 times [2023-11-22 21:30:01,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:01,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242393213] [2023-11-22 21:30:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:01,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 21:30:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 21:30:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 21:30:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 21:30:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 21:30:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 21:30:01,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:01,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242393213] [2023-11-22 21:30:01,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242393213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:01,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084008021] [2023-11-22 21:30:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:01,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:01,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:01,672 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 21:30:01,673 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 21:30:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:01,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:30:01,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 21:30:01,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084008021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:01,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:01,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-22 21:30:01,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754781843] [2023-11-22 21:30:01,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:01,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:30:01,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:30:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:30:01,993 INFO L87 Difference]: Start difference. First operand 728 states and 1208 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:30:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:02,177 INFO L93 Difference]: Finished difference Result 1337 states and 2213 transitions. [2023-11-22 21:30:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:30:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2023-11-22 21:30:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:02,181 INFO L225 Difference]: With dead ends: 1337 [2023-11-22 21:30:02,181 INFO L226 Difference]: Without dead ends: 750 [2023-11-22 21:30:02,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:30:02,184 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 142 mSDsluCounter, 5587 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6535 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:02,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6535 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-11-22 21:30:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 728. [2023-11-22 21:30:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 580 states have (on average 1.6948275862068964) internal successors, (983), 602 states have internal predecessors, (983), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2023-11-22 21:30:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1208 transitions. [2023-11-22 21:30:02,200 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1208 transitions. Word has length 96 [2023-11-22 21:30:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:02,200 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1208 transitions. [2023-11-22 21:30:02,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 21:30:02,200 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1208 transitions. [2023-11-22 21:30:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-22 21:30:02,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:02,201 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] [2023-11-22 21:30:02,227 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 21:30:02,414 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 21:30:02,414 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:02,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:02,415 INFO L85 PathProgramCache]: Analyzing trace with hash 641277355, now seen corresponding path program 1 times [2023-11-22 21:30:02,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:02,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191974209] [2023-11-22 21:30:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:02,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:30:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 21:30:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 21:30:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 21:30:02,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191974209] [2023-11-22 21:30:02,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191974209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190214065] [2023-11-22 21:30:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:02,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:02,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:02,609 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 21:30:02,631 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 21:30:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:02,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 21:30:02,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 21:30:02,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:02,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190214065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:02,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:02,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-22 21:30:02,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930850614] [2023-11-22 21:30:02,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:02,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:30:02,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:02,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:30:02,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:30:02,989 INFO L87 Difference]: Start difference. First operand 728 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:30:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:03,099 INFO L93 Difference]: Finished difference Result 1892 states and 3154 transitions. [2023-11-22 21:30:03,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:30:03,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2023-11-22 21:30:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:03,108 INFO L225 Difference]: With dead ends: 1892 [2023-11-22 21:30:03,109 INFO L226 Difference]: Without dead ends: 1309 [2023-11-22 21:30:03,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:30:03,111 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 924 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:03,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1956 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-11-22 21:30:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1244. [2023-11-22 21:30:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 992 states have (on average 1.6945564516129032) internal successors, (1681), 1023 states have internal predecessors, (1681), 194 states have call successors, (194), 56 states have call predecessors, (194), 57 states have return successors, (201), 179 states have call predecessors, (201), 190 states have call successors, (201) [2023-11-22 21:30:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 2076 transitions. [2023-11-22 21:30:03,143 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 2076 transitions. Word has length 85 [2023-11-22 21:30:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:03,143 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 2076 transitions. [2023-11-22 21:30:03,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:30:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 2076 transitions. [2023-11-22 21:30:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-22 21:30:03,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:03,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:03,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-22 21:30:03,358 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 21:30:03,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:03,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:03,359 INFO L85 PathProgramCache]: Analyzing trace with hash -936541888, now seen corresponding path program 1 times [2023-11-22 21:30:03,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:03,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507757442] [2023-11-22 21:30:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:03,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 21:30:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 21:30:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 21:30:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-22 21:30:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 21:30:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 21:30:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 21:30:03,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:03,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507757442] [2023-11-22 21:30:03,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507757442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:03,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544149241] [2023-11-22 21:30:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:03,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:03,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:03,785 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 21:30:03,787 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 21:30:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 21:30:04,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-22 21:30:04,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:04,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544149241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:04,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:04,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-22 21:30:04,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023475555] [2023-11-22 21:30:04,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:04,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:30:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:30:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:30:04,126 INFO L87 Difference]: Start difference. First operand 1244 states and 2076 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:04,242 INFO L93 Difference]: Finished difference Result 3160 states and 5259 transitions. [2023-11-22 21:30:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:30:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 135 [2023-11-22 21:30:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:04,252 INFO L225 Difference]: With dead ends: 3160 [2023-11-22 21:30:04,252 INFO L226 Difference]: Without dead ends: 2061 [2023-11-22 21:30:04,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:04,257 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 997 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:04,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 3301 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:04,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2023-11-22 21:30:04,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2053. [2023-11-22 21:30:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 1628 states have (on average 1.6683046683046683) internal successors, (2716), 1662 states have internal predecessors, (2716), 327 states have call successors, (327), 94 states have call predecessors, (327), 97 states have return successors, (359), 312 states have call predecessors, (359), 321 states have call successors, (359) [2023-11-22 21:30:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 3402 transitions. [2023-11-22 21:30:04,348 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 3402 transitions. Word has length 135 [2023-11-22 21:30:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:04,349 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 3402 transitions. [2023-11-22 21:30:04,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 3402 transitions. [2023-11-22 21:30:04,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:30:04,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:04,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:04,366 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 21:30:04,566 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 21:30:04,567 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:04,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:04,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1380260946, now seen corresponding path program 1 times [2023-11-22 21:30:04,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:04,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619530944] [2023-11-22 21:30:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:04,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:30:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 21:30:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 21:30:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 21:30:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 21:30:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-22 21:30:04,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619530944] [2023-11-22 21:30:04,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619530944] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:04,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241558175] [2023-11-22 21:30:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:04,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:04,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:04,985 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 21:30:05,034 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 21:30:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:05,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:30:05,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:05,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:05,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241558175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:05,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:05,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-22 21:30:05,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829029955] [2023-11-22 21:30:05,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:05,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:05,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:05,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:05,433 INFO L87 Difference]: Start difference. First operand 2053 states and 3402 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 21:30:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:05,926 INFO L93 Difference]: Finished difference Result 3993 states and 6749 transitions. [2023-11-22 21:30:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:30:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2023-11-22 21:30:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:05,937 INFO L225 Difference]: With dead ends: 3993 [2023-11-22 21:30:05,937 INFO L226 Difference]: Without dead ends: 2085 [2023-11-22 21:30:05,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:30:05,946 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 926 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:05,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 2423 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:30:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2023-11-22 21:30:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2085. [2023-11-22 21:30:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1656 states have (on average 1.6690821256038648) internal successors, (2764), 1690 states have internal predecessors, (2764), 327 states have call successors, (327), 98 states have call predecessors, (327), 101 states have return successors, (363), 312 states have call predecessors, (363), 321 states have call successors, (363) [2023-11-22 21:30:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3454 transitions. [2023-11-22 21:30:06,015 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3454 transitions. Word has length 136 [2023-11-22 21:30:06,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:06,016 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3454 transitions. [2023-11-22 21:30:06,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 21:30:06,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3454 transitions. [2023-11-22 21:30:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-22 21:30:06,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:06,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:06,036 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 21:30:06,229 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 21:30:06,229 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:06,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1009203572, now seen corresponding path program 1 times [2023-11-22 21:30:06,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:06,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657303513] [2023-11-22 21:30:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:06,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:30:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 21:30:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 21:30:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 21:30:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-22 21:30:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-22 21:30:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:30:06,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657303513] [2023-11-22 21:30:06,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657303513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230302733] [2023-11-22 21:30:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:06,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:06,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:06,664 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 21:30:06,683 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 21:30:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:06,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:30:06,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:07,053 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:07,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:07,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230302733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:07,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:07,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-22 21:30:07,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872112046] [2023-11-22 21:30:07,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:07,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:07,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:07,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:07,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:07,055 INFO L87 Difference]: Start difference. First operand 2085 states and 3454 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 21:30:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:07,591 INFO L93 Difference]: Finished difference Result 4057 states and 6841 transitions. [2023-11-22 21:30:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:30:07,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 138 [2023-11-22 21:30:07,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:07,600 INFO L225 Difference]: With dead ends: 4057 [2023-11-22 21:30:07,601 INFO L226 Difference]: Without dead ends: 2117 [2023-11-22 21:30:07,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:30:07,610 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 926 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:07,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 2423 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:30:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2023-11-22 21:30:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2117. [2023-11-22 21:30:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 1684 states have (on average 1.669833729216152) internal successors, (2812), 1718 states have internal predecessors, (2812), 327 states have call successors, (327), 102 states have call predecessors, (327), 105 states have return successors, (367), 312 states have call predecessors, (367), 321 states have call successors, (367) [2023-11-22 21:30:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3506 transitions. [2023-11-22 21:30:07,660 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3506 transitions. Word has length 138 [2023-11-22 21:30:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:07,660 INFO L495 AbstractCegarLoop]: Abstraction has 2117 states and 3506 transitions. [2023-11-22 21:30:07,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 21:30:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3506 transitions. [2023-11-22 21:30:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-22 21:30:07,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:07,665 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 21:30:07,678 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 21:30:07,878 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 21:30:07,878 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:07,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash -23614468, now seen corresponding path program 1 times [2023-11-22 21:30:07,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:07,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643461090] [2023-11-22 21:30:07,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:07,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:30:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 21:30:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:30:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 21:30:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 21:30:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-22 21:30:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 21:30:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 21:30:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:30:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 21:30:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 21:30:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-11-22 21:30:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-11-22 21:30:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-11-22 21:30:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-22 21:30:08,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:08,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643461090] [2023-11-22 21:30:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643461090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:08,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656379237] [2023-11-22 21:30:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:08,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:08,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:08,612 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:08,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 21:30:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:08,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:30:08,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-22 21:30:09,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656379237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:09,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-11-22 21:30:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019394016] [2023-11-22 21:30:09,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:09,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:09,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:30:09,093 INFO L87 Difference]: Start difference. First operand 2117 states and 3506 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 21:30:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:09,640 INFO L93 Difference]: Finished difference Result 4121 states and 6933 transitions. [2023-11-22 21:30:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:30:09,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 207 [2023-11-22 21:30:09,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:09,649 INFO L225 Difference]: With dead ends: 4121 [2023-11-22 21:30:09,654 INFO L226 Difference]: Without dead ends: 2149 [2023-11-22 21:30:09,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:30:09,661 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 930 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:09,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2423 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 21:30:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-11-22 21:30:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2023-11-22 21:30:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1712 states have (on average 1.6705607476635513) internal successors, (2860), 1746 states have internal predecessors, (2860), 327 states have call successors, (327), 106 states have call predecessors, (327), 109 states have return successors, (371), 312 states have call predecessors, (371), 321 states have call successors, (371) [2023-11-22 21:30:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3558 transitions. [2023-11-22 21:30:09,711 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3558 transitions. Word has length 207 [2023-11-22 21:30:09,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:09,711 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3558 transitions. [2023-11-22 21:30:09,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 21:30:09,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3558 transitions. [2023-11-22 21:30:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-22 21:30:09,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:09,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:09,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:09,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:09,929 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:09,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:09,929 INFO L85 PathProgramCache]: Analyzing trace with hash -262288660, now seen corresponding path program 1 times [2023-11-22 21:30:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:09,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074808559] [2023-11-22 21:30:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:09,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:30:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:30:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:30:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:30:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 21:30:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 21:30:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 21:30:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-22 21:30:10,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074808559] [2023-11-22 21:30:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074808559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533716498] [2023-11-22 21:30:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:10,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:10,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:10,361 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:10,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 21:30:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:10,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:30:10,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:10,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:10,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533716498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:10,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:10,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-22 21:30:10,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543494403] [2023-11-22 21:30:10,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:10,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:30:10,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:30:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:30:10,741 INFO L87 Difference]: Start difference. First operand 2149 states and 3558 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 21:30:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:11,203 INFO L93 Difference]: Finished difference Result 4185 states and 7025 transitions. [2023-11-22 21:30:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:30:11,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 142 [2023-11-22 21:30:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:11,238 INFO L225 Difference]: With dead ends: 4185 [2023-11-22 21:30:11,238 INFO L226 Difference]: Without dead ends: 2181 [2023-11-22 21:30:11,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:30:11,246 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 927 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:11,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 2423 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:30:11,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2023-11-22 21:30:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2023-11-22 21:30:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 1740 states have (on average 1.671264367816092) internal successors, (2908), 1774 states have internal predecessors, (2908), 327 states have call successors, (327), 110 states have call predecessors, (327), 113 states have return successors, (375), 312 states have call predecessors, (375), 321 states have call successors, (375) [2023-11-22 21:30:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3610 transitions. [2023-11-22 21:30:11,317 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3610 transitions. Word has length 142 [2023-11-22 21:30:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:11,317 INFO L495 AbstractCegarLoop]: Abstraction has 2181 states and 3610 transitions. [2023-11-22 21:30:11,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 21:30:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3610 transitions. [2023-11-22 21:30:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-22 21:30:11,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:11,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:11,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:11,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:11,535 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:11,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2112648366, now seen corresponding path program 1 times [2023-11-22 21:30:11,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:11,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717596682] [2023-11-22 21:30:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:11,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:30:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 21:30:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 21:30:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 21:30:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:30:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 21:30:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 21:30:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-22 21:30:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-22 21:30:11,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:11,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717596682] [2023-11-22 21:30:11,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717596682] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:11,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7663582] [2023-11-22 21:30:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:11,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:11,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:11,886 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:11,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-22 21:30:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:12,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 21:30:12,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-22 21:30:12,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:12,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7663582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:12,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:12,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-22 21:30:12,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012622398] [2023-11-22 21:30:12,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:12,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:30:12,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:30:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:30:12,195 INFO L87 Difference]: Start difference. First operand 2181 states and 3610 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:12,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:12,299 INFO L93 Difference]: Finished difference Result 4344 states and 7205 transitions. [2023-11-22 21:30:12,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:30:12,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2023-11-22 21:30:12,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:12,317 INFO L225 Difference]: With dead ends: 4344 [2023-11-22 21:30:12,317 INFO L226 Difference]: Without dead ends: 2147 [2023-11-22 21:30:12,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:30:12,324 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 13 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:12,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2871 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:30:12,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2023-11-22 21:30:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2147. [2023-11-22 21:30:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 1709 states have (on average 1.6617905207723815) internal successors, (2840), 1741 states have internal predecessors, (2840), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2023-11-22 21:30:12,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3538 transitions. [2023-11-22 21:30:12,383 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3538 transitions. Word has length 144 [2023-11-22 21:30:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:12,383 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3538 transitions. [2023-11-22 21:30:12,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3538 transitions. [2023-11-22 21:30:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-22 21:30:12,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:12,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:12,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-22 21:30:12,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:12,600 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:12,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:12,600 INFO L85 PathProgramCache]: Analyzing trace with hash -221744465, now seen corresponding path program 1 times [2023-11-22 21:30:12,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:12,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130258872] [2023-11-22 21:30:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:12,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:30:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:12,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 21:30:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 21:30:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:30:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 21:30:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 21:30:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-22 21:30:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 21:30:13,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:13,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130258872] [2023-11-22 21:30:13,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130258872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:13,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184330080] [2023-11-22 21:30:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:13,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:13,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:13,116 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:13,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-22 21:30:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 21:30:13,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 21:30:13,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:30:13,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184330080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:13,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:30:13,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2023-11-22 21:30:13,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144452370] [2023-11-22 21:30:13,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:13,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:30:13,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:30:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:30:13,437 INFO L87 Difference]: Start difference. First operand 2147 states and 3538 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-22 21:30:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:13,571 INFO L93 Difference]: Finished difference Result 4316 states and 7110 transitions. [2023-11-22 21:30:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:30:13,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 145 [2023-11-22 21:30:13,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:13,578 INFO L225 Difference]: With dead ends: 4316 [2023-11-22 21:30:13,578 INFO L226 Difference]: Without dead ends: 2182 [2023-11-22 21:30:13,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:30:13,583 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 134 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5654 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:13,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5654 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:30:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2023-11-22 21:30:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 2140. [2023-11-22 21:30:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 1702 states have (on average 1.6592244418331374) internal successors, (2824), 1734 states have internal predecessors, (2824), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2023-11-22 21:30:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3522 transitions. [2023-11-22 21:30:13,628 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3522 transitions. Word has length 145 [2023-11-22 21:30:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:13,629 INFO L495 AbstractCegarLoop]: Abstraction has 2140 states and 3522 transitions. [2023-11-22 21:30:13,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-22 21:30:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3522 transitions. [2023-11-22 21:30:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-22 21:30:13,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:13,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:13,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-22 21:30:13,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:13,844 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:13,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 556571124, now seen corresponding path program 1 times [2023-11-22 21:30:13,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:13,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159904242] [2023-11-22 21:30:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:13,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:30:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:30:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:30:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 21:30:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:30:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 21:30:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 21:30:14,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159904242] [2023-11-22 21:30:14,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159904242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:14,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:30:14,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 21:30:14,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926191180] [2023-11-22 21:30:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:14,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:30:14,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:30:14,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:30:14,397 INFO L87 Difference]: Start difference. First operand 2140 states and 3522 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:19,565 INFO L93 Difference]: Finished difference Result 4948 states and 8228 transitions. [2023-11-22 21:30:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 21:30:19,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-11-22 21:30:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:19,576 INFO L225 Difference]: With dead ends: 4948 [2023-11-22 21:30:19,576 INFO L226 Difference]: Without dead ends: 2904 [2023-11-22 21:30:19,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:30:19,582 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1165 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:19,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1547 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-22 21:30:19,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2023-11-22 21:30:19,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2188. [2023-11-22 21:30:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1741 states have (on average 1.6547960941987363) internal successors, (2881), 1773 states have internal predecessors, (2881), 332 states have call successors, (332), 110 states have call predecessors, (332), 114 states have return successors, (384), 318 states have call predecessors, (384), 326 states have call successors, (384) [2023-11-22 21:30:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3597 transitions. [2023-11-22 21:30:19,858 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3597 transitions. Word has length 146 [2023-11-22 21:30:19,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:19,859 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3597 transitions. [2023-11-22 21:30:19,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3597 transitions. [2023-11-22 21:30:19,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-22 21:30:19,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:19,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:19,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 21:30:19,863 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:19,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1894389726, now seen corresponding path program 1 times [2023-11-22 21:30:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:19,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740841401] [2023-11-22 21:30:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 21:30:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:30:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:30:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:30:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 21:30:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:30:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 21:30:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-22 21:30:20,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:20,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740841401] [2023-11-22 21:30:20,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740841401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:30:20,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:30:20,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 21:30:20,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779205249] [2023-11-22 21:30:20,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:30:20,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:30:20,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:30:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:30:20,315 INFO L87 Difference]: Start difference. First operand 2188 states and 3597 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:30:24,743 INFO L93 Difference]: Finished difference Result 5005 states and 8307 transitions. [2023-11-22 21:30:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:30:24,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-11-22 21:30:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:30:24,753 INFO L225 Difference]: With dead ends: 5005 [2023-11-22 21:30:24,753 INFO L226 Difference]: Without dead ends: 2822 [2023-11-22 21:30:24,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:30:24,758 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1091 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:30:24,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1536 Invalid, 3508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-22 21:30:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2023-11-22 21:30:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2161. [2023-11-22 21:30:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 1717 states have (on average 1.6517181129877694) internal successors, (2836), 1747 states have internal predecessors, (2836), 331 states have call successors, (331), 110 states have call predecessors, (331), 112 states have return successors, (381), 317 states have call predecessors, (381), 325 states have call successors, (381) [2023-11-22 21:30:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 3548 transitions. [2023-11-22 21:30:25,049 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 3548 transitions. Word has length 146 [2023-11-22 21:30:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:30:25,050 INFO L495 AbstractCegarLoop]: Abstraction has 2161 states and 3548 transitions. [2023-11-22 21:30:25,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 21:30:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 3548 transitions. [2023-11-22 21:30:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-22 21:30:25,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:30:25,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:30:25,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 21:30:25,054 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:30:25,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:30:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1257170177, now seen corresponding path program 1 times [2023-11-22 21:30:25,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:30:25,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541287792] [2023-11-22 21:30:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:25,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:30:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:30:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:30:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:30:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 21:30:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:30:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:30:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-22 21:30:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-22 21:30:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:30:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:30:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:30:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:30:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-11-22 21:30:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 21:30:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-22 21:30:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-22 21:30:26,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:30:26,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541287792] [2023-11-22 21:30:26,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541287792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:30:26,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598081552] [2023-11-22 21:30:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:30:26,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:30:26,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:30:26,525 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:30:26,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-22 21:30:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:30:26,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 21:30:26,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:30:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-22 21:30:26,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:30:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-22 21:30:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598081552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:30:27,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:30:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 6, 6] total 30 [2023-11-22 21:30:27,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34629989] [2023-11-22 21:30:27,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:30:27,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-22 21:30:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:30:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-22 21:30:27,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2023-11-22 21:30:27,388 INFO L87 Difference]: Start difference. First operand 2161 states and 3548 transitions. Second operand has 30 states, 27 states have (on average 7.333333333333333) internal successors, (198), 23 states have internal predecessors, (198), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 11 states have call successors, (50) [2023-11-22 21:32:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:32:00,960 INFO L93 Difference]: Finished difference Result 36752 states and 69475 transitions. [2023-11-22 21:32:00,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 339 states. [2023-11-22 21:32:00,961 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 7.333333333333333) internal successors, (198), 23 states have internal predecessors, (198), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 11 states have call successors, (50) Word has length 218 [2023-11-22 21:32:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:32:01,248 INFO L225 Difference]: With dead ends: 36752 [2023-11-22 21:32:01,248 INFO L226 Difference]: Without dead ends: 34184 [2023-11-22 21:32:01,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 641 SyntacticMatches, 5 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63200 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=17077, Invalid=116513, Unknown=0, NotChecked=0, Total=133590 [2023-11-22 21:32:01,305 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 27955 mSDsluCounter, 12395 mSDsCounter, 0 mSdLazyCounter, 41047 mSolverCounterSat, 12185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27965 SdHoareTripleChecker+Valid, 13358 SdHoareTripleChecker+Invalid, 53232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 12185 IncrementalHoareTripleChecker+Valid, 41047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:32:01,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27965 Valid, 13358 Invalid, 53232 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [12185 Valid, 41047 Invalid, 0 Unknown, 0 Unchecked, 36.5s Time] [2023-11-22 21:32:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34184 states. [2023-11-22 21:32:03,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34184 to 10909. [2023-11-22 21:32:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10909 states, 8525 states have (on average 1.5656304985337244) internal successors, (13347), 8706 states have internal predecessors, (13347), 1668 states have call successors, (1668), 657 states have call predecessors, (1668), 715 states have return successors, (2880), 1605 states have call predecessors, (2880), 1648 states have call successors, (2880) [2023-11-22 21:32:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 17895 transitions. [2023-11-22 21:32:03,470 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 17895 transitions. Word has length 218 [2023-11-22 21:32:03,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:32:03,470 INFO L495 AbstractCegarLoop]: Abstraction has 10909 states and 17895 transitions. [2023-11-22 21:32:03,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 7.333333333333333) internal successors, (198), 23 states have internal predecessors, (198), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 15 states have call predecessors, (50), 11 states have call successors, (50) [2023-11-22 21:32:03,470 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 17895 transitions. [2023-11-22 21:32:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 21:32:03,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:32:03,477 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:32:03,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-22 21:32:03,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-22 21:32:03,690 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:32:03,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:32:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash 818593007, now seen corresponding path program 1 times [2023-11-22 21:32:03,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:32:03,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768051059] [2023-11-22 21:32:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:32:03,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:32:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:03,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:32:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:03,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:32:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:32:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:32:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:32:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:32:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:32:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:32:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:32:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:32:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-22 21:32:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-22 21:32:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-22 21:32:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:32:04,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:32:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768051059] [2023-11-22 21:32:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768051059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:32:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263930919] [2023-11-22 21:32:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:32:04,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:32:04,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:32:04,575 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:32:04,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-22 21:32:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:04,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-22 21:32:04,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:32:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 21:32:05,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:32:05,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263930919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:32:05,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:32:05,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-22 21:32:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892356589] [2023-11-22 21:32:05,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:32:05,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:32:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:32:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:32:05,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:32:05,009 INFO L87 Difference]: Start difference. First operand 10909 states and 17895 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-22 21:32:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:32:08,722 INFO L93 Difference]: Finished difference Result 20136 states and 33516 transitions. [2023-11-22 21:32:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:32:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 147 [2023-11-22 21:32:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:32:08,765 INFO L225 Difference]: With dead ends: 20136 [2023-11-22 21:32:08,765 INFO L226 Difference]: Without dead ends: 10390 [2023-11-22 21:32:08,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-22 21:32:08,799 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 2283 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:32:08,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 1053 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-22 21:32:08,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10390 states. [2023-11-22 21:32:10,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10390 to 9902. [2023-11-22 21:32:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9902 states, 7598 states have (on average 1.578441695182943) internal successors, (11993), 7845 states have internal predecessors, (11993), 1719 states have call successors, (1719), 537 states have call predecessors, (1719), 584 states have return successors, (2664), 1627 states have call predecessors, (2664), 1699 states have call successors, (2664) [2023-11-22 21:32:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9902 states to 9902 states and 16376 transitions. [2023-11-22 21:32:10,790 INFO L78 Accepts]: Start accepts. Automaton has 9902 states and 16376 transitions. Word has length 147 [2023-11-22 21:32:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:32:10,790 INFO L495 AbstractCegarLoop]: Abstraction has 9902 states and 16376 transitions. [2023-11-22 21:32:10,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-11-22 21:32:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 9902 states and 16376 transitions. [2023-11-22 21:32:10,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 21:32:10,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:32:10,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:32:10,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-22 21:32:11,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 21:32:11,009 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:32:11,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:32:11,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1235989613, now seen corresponding path program 1 times [2023-11-22 21:32:11,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:32:11,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66753918] [2023-11-22 21:32:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:32:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:32:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:32:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:32:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:32:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:32:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:32:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:32:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:32:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:32:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:32:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:32:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-22 21:32:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-22 21:32:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-22 21:32:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:32:11,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:32:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66753918] [2023-11-22 21:32:11,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66753918] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:32:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593978667] [2023-11-22 21:32:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:32:11,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:32:11,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:32:11,749 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:32:11,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-22 21:32:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:12,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-22 21:32:12,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:32:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-22 21:32:12,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:32:12,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593978667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:32:12,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:32:12,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-11-22 21:32:12,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57554463] [2023-11-22 21:32:12,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:32:12,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:32:12,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:32:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:32:12,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-11-22 21:32:12,165 INFO L87 Difference]: Start difference. First operand 9902 states and 16376 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:32:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:32:19,134 INFO L93 Difference]: Finished difference Result 30703 states and 51728 transitions. [2023-11-22 21:32:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 21:32:19,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2023-11-22 21:32:19,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:32:19,230 INFO L225 Difference]: With dead ends: 30703 [2023-11-22 21:32:19,230 INFO L226 Difference]: Without dead ends: 21981 [2023-11-22 21:32:19,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-11-22 21:32:19,277 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 3018 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 5407 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3206 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 5994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 5407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:32:19,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3206 Valid, 1454 Invalid, 5994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 5407 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-22 21:32:19,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21981 states. [2023-11-22 21:32:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21981 to 21607. [2023-11-22 21:32:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21607 states, 16431 states have (on average 1.5654555413547562) internal successors, (25722), 17009 states have internal predecessors, (25722), 3893 states have call successors, (3893), 1145 states have call predecessors, (3893), 1282 states have return successors, (6326), 3704 states have call predecessors, (6326), 3867 states have call successors, (6326) [2023-11-22 21:32:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21607 states to 21607 states and 35941 transitions. [2023-11-22 21:32:23,522 INFO L78 Accepts]: Start accepts. Automaton has 21607 states and 35941 transitions. Word has length 147 [2023-11-22 21:32:23,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:32:23,523 INFO L495 AbstractCegarLoop]: Abstraction has 21607 states and 35941 transitions. [2023-11-22 21:32:23,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-22 21:32:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 21607 states and 35941 transitions. [2023-11-22 21:32:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-22 21:32:23,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:32:23,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:32:23,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-22 21:32:23,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-22 21:32:23,742 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:32:23,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:32:23,742 INFO L85 PathProgramCache]: Analyzing trace with hash 557265501, now seen corresponding path program 1 times [2023-11-22 21:32:23,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:32:23,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711730036] [2023-11-22 21:32:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:32:23,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:32:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:32:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:32:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:32:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:32:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:32:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:32:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:32:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:32:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:32:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:32:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:32:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:32:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 21:32:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 21:32:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-22 21:32:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:32:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-22 21:32:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:32:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711730036] [2023-11-22 21:32:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711730036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:32:24,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:32:24,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 21:32:24,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301509402] [2023-11-22 21:32:24,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:32:24,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 21:32:24,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:32:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 21:32:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:32:24,371 INFO L87 Difference]: Start difference. First operand 21607 states and 35941 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-22 21:32:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:32:52,836 INFO L93 Difference]: Finished difference Result 93781 states and 164313 transitions. [2023-11-22 21:32:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-22 21:32:52,837 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 151 [2023-11-22 21:32:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:32:53,270 INFO L225 Difference]: With dead ends: 93781 [2023-11-22 21:32:53,271 INFO L226 Difference]: Without dead ends: 73852 [2023-11-22 21:32:53,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2023-11-22 21:32:53,642 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 5906 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 6063 mSolverCounterSat, 2036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5979 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 8099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2036 IncrementalHoareTripleChecker+Valid, 6063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:32:53,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5979 Valid, 2230 Invalid, 8099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2036 Valid, 6063 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-11-22 21:32:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73852 states. [2023-11-22 21:32:59,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73852 to 27856. [2023-11-22 21:32:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27856 states, 21259 states have (on average 1.566630603509102) internal successors, (33305), 21940 states have internal predecessors, (33305), 4963 states have call successors, (4963), 1473 states have call predecessors, (4963), 1633 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2023-11-22 21:33:00,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27856 states to 27856 states and 46499 transitions. [2023-11-22 21:33:00,060 INFO L78 Accepts]: Start accepts. Automaton has 27856 states and 46499 transitions. Word has length 151 [2023-11-22 21:33:00,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:33:00,061 INFO L495 AbstractCegarLoop]: Abstraction has 27856 states and 46499 transitions. [2023-11-22 21:33:00,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-22 21:33:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 27856 states and 46499 transitions. [2023-11-22 21:33:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-22 21:33:00,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:33:00,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:33:00,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-22 21:33:00,067 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:33:00,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:33:00,067 INFO L85 PathProgramCache]: Analyzing trace with hash 484878943, now seen corresponding path program 1 times [2023-11-22 21:33:00,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:33:00,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210398028] [2023-11-22 21:33:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:33:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:33:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:33:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:33:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:33:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:33:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:33:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 21:33:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 21:33:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:33:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:33:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:33:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:33:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:33:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:33:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:33:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 21:33:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:33:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 21:33:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 21:33:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-22 21:33:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-22 21:33:00,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:33:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210398028] [2023-11-22 21:33:00,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210398028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:33:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049935919] [2023-11-22 21:33:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:33:00,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:33:00,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:33:00,721 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:33:00,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-22 21:33:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:33:00,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 21:33:01,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:33:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-22 21:33:01,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:33:01,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049935919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:33:01,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:33:01,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-22 21:33:01,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092023739] [2023-11-22 21:33:01,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:33:01,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:33:01,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:33:01,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:33:01,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:33:01,080 INFO L87 Difference]: Start difference. First operand 27856 states and 46499 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18)