./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.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 f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 19:11:43,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 19:11:43,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 19:11:43,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 19:11:43,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 19:11:43,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 19:11:43,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 19:11:43,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 19:11:43,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 19:11:43,610 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 19:11:43,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 19:11:43,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 19:11:43,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 19:11:43,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 19:11:43,612 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 19:11:43,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 19:11:43,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 19:11:43,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 19:11:43,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 19:11:43,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 19:11:43,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 19:11:43,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 19:11:43,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 19:11:43,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 19:11:43,618 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 19:11:43,618 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 19:11:43,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 19:11:43,619 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 19:11:43,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 19:11:43,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 19:11:43,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 19:11:43,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 19:11:43,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:11:43,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 19:11:43,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 19:11:43,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 19:11:43,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 19:11:43,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 19:11:43,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 19:11:43,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 19:11:43,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 19:11:43,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 19:11:43,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a [2024-10-12 19:11:43,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 19:11:43,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 19:11:43,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 19:11:43,924 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 19:11:43,925 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 19:11:43,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2024-10-12 19:11:45,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 19:11:45,697 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 19:11:45,698 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2024-10-12 19:11:45,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608768b44/5bcd62ad187f4828a74184e439d9f4ab/FLAGc8bbe6d8b [2024-10-12 19:11:45,740 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608768b44/5bcd62ad187f4828a74184e439d9f4ab [2024-10-12 19:11:45,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 19:11:45,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 19:11:45,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 19:11:45,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 19:11:45,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 19:11:45,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:11:45" (1/1) ... [2024-10-12 19:11:45,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68eb1ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:45, skipping insertion in model container [2024-10-12 19:11:45,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:11:45" (1/1) ... [2024-10-12 19:11:45,829 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 19:11:46,033 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2024-10-12 19:11:46,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:11:46,376 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 19:11:46,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-10-12 19:11:46,387 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [68] [2024-10-12 19:11:46,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [77] [2024-10-12 19:11:46,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [443] [2024-10-12 19:11:46,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2020] [2024-10-12 19:11:46,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2682] [2024-10-12 19:11:46,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2775] [2024-10-12 19:11:46,390 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2893] [2024-10-12 19:11:46,390 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2931] [2024-10-12 19:11:46,390 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3279] [2024-10-12 19:11:46,396 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2024-10-12 19:11:46,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:11:46,539 INFO L204 MainTranslator]: Completed translation [2024-10-12 19:11:46,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46 WrapperNode [2024-10-12 19:11:46,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 19:11:46,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 19:11:46,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 19:11:46,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 19:11:46,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,642 INFO L138 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 838 [2024-10-12 19:11:46,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 19:11:46,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 19:11:46,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 19:11:46,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 19:11:46,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,676 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,721 INFO L175 MemorySlicer]: 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]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-10-12 19:11:46,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 19:11:46,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 19:11:46,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 19:11:46,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 19:11:46,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (1/1) ... [2024-10-12 19:11:46,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:11:46,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:11:46,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 19:11:46,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 19:11:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-10-12 19:11:46,918 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-10-12 19:11:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 19:11:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-10-12 19:11:46,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-10-12 19:11:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-12 19:11:46,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-12 19:11:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-10-12 19:11:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-10-12 19:11:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-12 19:11:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-12 19:11:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-12 19:11:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-12 19:11:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-10-12 19:11:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-10-12 19:11:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-12 19:11:46,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-12 19:11:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-12 19:11:46,922 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-12 19:11:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-12 19:11:46,923 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-12 19:11:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-12 19:11:46,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-12 19:11:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-12 19:11:46,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-12 19:11:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-12 19:11:46,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-12 19:11:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-12 19:11:46,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-12 19:11:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-12 19:11:46,924 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-12 19:11:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-12 19:11:46,924 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-12 19:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-12 19:11:46,925 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-12 19:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-12 19:11:46,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-12 19:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-12 19:11:46,926 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-12 19:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 19:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 19:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 19:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 19:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 19:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 19:11:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 19:11:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 19:11:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 19:11:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 19:11:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 19:11:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 19:11:46,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-12 19:11:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-12 19:11:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-12 19:11:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-12 19:11:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-12 19:11:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-12 19:11:46,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-12 19:11:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-12 19:11:46,930 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-10-12 19:11:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-10-12 19:11:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-12 19:11:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-12 19:11:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-12 19:11:46,932 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-12 19:11:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-12 19:11:46,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-12 19:11:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-10-12 19:11:46,933 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-10-12 19:11:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-10-12 19:11:46,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-10-12 19:11:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 19:11:46,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 19:11:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-12 19:11:46,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-12 19:11:47,118 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 19:11:47,120 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 19:11:48,262 INFO L? ?]: Removed 464 outVars from TransFormulas that were not future-live. [2024-10-12 19:11:48,262 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 19:11:48,340 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 19:11:48,340 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-12 19:11:48,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:11:48 BoogieIcfgContainer [2024-10-12 19:11:48,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 19:11:48,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 19:11:48,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 19:11:48,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 19:11:48,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:11:45" (1/3) ... [2024-10-12 19:11:48,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4008230e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:11:48, skipping insertion in model container [2024-10-12 19:11:48,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:11:46" (2/3) ... [2024-10-12 19:11:48,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4008230e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:11:48, skipping insertion in model container [2024-10-12 19:11:48,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:11:48" (3/3) ... [2024-10-12 19:11:48,351 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2024-10-12 19:11:48,366 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 19:11:48,367 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 19:11:48,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 19:11:48,457 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8cdcc2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 19:11:48,461 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 19:11:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 577 states, 447 states have (on average 1.7248322147651007) internal successors, (771), 467 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-10-12 19:11:48,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-12 19:11:48,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:11:48,498 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:11:48,499 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:11:48,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:11:48,504 INFO L85 PathProgramCache]: Analyzing trace with hash 45902878, now seen corresponding path program 1 times [2024-10-12 19:11:48,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:11:48,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434400179] [2024-10-12 19:11:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:48,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:11:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:11:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:11:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 19:11:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:11:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 19:11:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-12 19:11:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 19:11:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 19:11:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 19:11:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 19:11:49,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:11:49,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434400179] [2024-10-12 19:11:49,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434400179] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:11:49,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125398016] [2024-10-12 19:11:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:49,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:49,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:11:49,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:11:49,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 19:11:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:50,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 1480 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-12 19:11:50,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:11:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 19:11:50,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:11:50,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125398016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:11:50,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:11:50,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-10-12 19:11:50,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661294397] [2024-10-12 19:11:50,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:11:50,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 19:11:50,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:11:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 19:11:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:11:50,241 INFO L87 Difference]: Start difference. First operand has 577 states, 447 states have (on average 1.7248322147651007) internal successors, (771), 467 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:11:50,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:11:50,374 INFO L93 Difference]: Finished difference Result 1138 states and 1939 transitions. [2024-10-12 19:11:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 19:11:50,377 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-10-12 19:11:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:11:50,397 INFO L225 Difference]: With dead ends: 1138 [2024-10-12 19:11:50,397 INFO L226 Difference]: Without dead ends: 571 [2024-10-12 19:11:50,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:11:50,407 INFO L432 NwaCegarLoop]: 947 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:11:50,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 947 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:11:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-10-12 19:11:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2024-10-12 19:11:50,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 444 states have (on average 1.7004504504504505) internal successors, (755), 462 states have internal predecessors, (755), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-10-12 19:11:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 956 transitions. [2024-10-12 19:11:50,500 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 956 transitions. Word has length 84 [2024-10-12 19:11:50,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:11:50,501 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 956 transitions. [2024-10-12 19:11:50,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-12 19:11:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 956 transitions. [2024-10-12 19:11:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-12 19:11:50,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:11:50,507 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:11:50,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 19:11:50,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-12 19:11:50,712 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:11:50,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:11:50,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1452086658, now seen corresponding path program 1 times [2024-10-12 19:11:50,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:11:50,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376713863] [2024-10-12 19:11:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:50,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:11:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:50,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:11:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:11:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-12 19:11:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:11:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 19:11:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-12 19:11:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 19:11:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 19:11:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 19:11:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 19:11:51,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:11:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376713863] [2024-10-12 19:11:51,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376713863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:11:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293318339] [2024-10-12 19:11:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:51,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:51,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:11:51,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:11:51,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 19:11:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:51,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:11:51,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:11:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 19:11:51,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:11:51,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293318339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:11:51,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:11:51,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-12 19:11:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392052153] [2024-10-12 19:11:51,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:11:51,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:11:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:11:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:11:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:11:51,793 INFO L87 Difference]: Start difference. First operand 571 states and 956 transitions. 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) [2024-10-12 19:11:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:11:51,941 INFO L93 Difference]: Finished difference Result 1148 states and 1925 transitions. [2024-10-12 19:11:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:11:51,941 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 [2024-10-12 19:11:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:11:51,946 INFO L225 Difference]: With dead ends: 1148 [2024-10-12 19:11:51,946 INFO L226 Difference]: Without dead ends: 580 [2024-10-12 19:11:51,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:11:51,950 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 17 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:11:51,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2776 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:11:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-10-12 19:11:51,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2024-10-12 19:11:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 452 states have (on average 1.7013274336283186) internal successors, (769), 470 states have internal predecessors, (769), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-10-12 19:11:51,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 970 transitions. [2024-10-12 19:11:51,987 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 970 transitions. Word has length 84 [2024-10-12 19:11:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:11:51,988 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 970 transitions. [2024-10-12 19:11:51,988 INFO L472 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) [2024-10-12 19:11:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 970 transitions. [2024-10-12 19:11:51,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 19:11:51,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:11:51,992 INFO L215 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] [2024-10-12 19:11:52,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 19:11:52,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-12 19:11:52,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:11:52,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:11:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash 707827952, now seen corresponding path program 1 times [2024-10-12 19:11:52,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:11:52,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363441712] [2024-10-12 19:11:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:52,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:11:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:11:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:11:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-12 19:11:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:11:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-12 19:11:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:11:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 19:11:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:11:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 19:11:52,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:11:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363441712] [2024-10-12 19:11:52,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363441712] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:11:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445903058] [2024-10-12 19:11:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:52,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:52,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:11:52,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:11:52,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 19:11:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:52,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:11:52,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:11:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:11:52,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:11:52,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445903058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:11:52,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:11:52,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-10-12 19:11:52,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206799878] [2024-10-12 19:11:52,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:11:52,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:11:52,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:11:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:11:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:11:52,954 INFO L87 Difference]: Start difference. First operand 580 states and 970 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-12 19:11:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:11:53,255 INFO L93 Difference]: Finished difference Result 1215 states and 2046 transitions. [2024-10-12 19:11:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:11:53,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2024-10-12 19:11:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:11:53,260 INFO L225 Difference]: With dead ends: 1215 [2024-10-12 19:11:53,261 INFO L226 Difference]: Without dead ends: 640 [2024-10-12 19:11:53,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:11:53,264 INFO L432 NwaCegarLoop]: 912 mSDtfsCounter, 121 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:11:53,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 2665 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:11:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-10-12 19:11:53,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 624. [2024-10-12 19:11:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 495 states have (on average 1.7212121212121212) internal successors, (852), 513 states have internal predecessors, (852), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-10-12 19:11:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1053 transitions. [2024-10-12 19:11:53,290 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1053 transitions. Word has length 74 [2024-10-12 19:11:53,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:11:53,291 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 1053 transitions. [2024-10-12 19:11:53,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-12 19:11:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1053 transitions. [2024-10-12 19:11:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-12 19:11:53,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:11:53,308 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:11:53,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 19:11:53,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:53,509 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:11:53,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:11:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash 210519474, now seen corresponding path program 1 times [2024-10-12 19:11:53,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:11:53,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685920791] [2024-10-12 19:11:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:53,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:11:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:53,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:11:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:53,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:11:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:53,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:11:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:53,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:53,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:11:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:54,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-12 19:11:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:54,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:54,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 19:11:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:54,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-12 19:11:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:54,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-12 19:11:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:54,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-12 19:11:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 19:11:54,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:11:54,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685920791] [2024-10-12 19:11:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685920791] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:11:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394422403] [2024-10-12 19:11:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:54,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:54,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:11:54,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:11:54,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 19:11:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:54,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:11:54,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:11:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 19:11:54,553 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:11:54,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394422403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:11:54,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:11:54,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-10-12 19:11:54,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563721054] [2024-10-12 19:11:54,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:11:54,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:11:54,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:11:54,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:11:54,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-10-12 19:11:54,557 INFO L87 Difference]: Start difference. First operand 624 states and 1053 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, (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) [2024-10-12 19:11:54,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:11:54,756 INFO L93 Difference]: Finished difference Result 1266 states and 2136 transitions. [2024-10-12 19:11:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:11:54,756 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, (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 88 [2024-10-12 19:11:54,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:11:54,763 INFO L225 Difference]: With dead ends: 1266 [2024-10-12 19:11:54,764 INFO L226 Difference]: Without dead ends: 647 [2024-10-12 19:11:54,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-12 19:11:54,769 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 89 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:11:54,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5478 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:11:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-10-12 19:11:54,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 636. [2024-10-12 19:11:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 504 states have (on average 1.7182539682539681) internal successors, (866), 524 states have internal predecessors, (866), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-10-12 19:11:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1073 transitions. [2024-10-12 19:11:54,813 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1073 transitions. Word has length 88 [2024-10-12 19:11:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:11:54,813 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1073 transitions. [2024-10-12 19:11:54,813 INFO L472 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, (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) [2024-10-12 19:11:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1073 transitions. [2024-10-12 19:11:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-12 19:11:54,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:11:54,816 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:11:54,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 19:11:55,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:55,017 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:11:55,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:11:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1885228893, now seen corresponding path program 1 times [2024-10-12 19:11:55,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:11:55,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607684442] [2024-10-12 19:11:55,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:55,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:11:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:11:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:11:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 19:11:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:11:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-12 19:11:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-12 19:11:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-12 19:11:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-12 19:11:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-12 19:11:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:11:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:11:55,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607684442] [2024-10-12 19:11:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607684442] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:11:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952533375] [2024-10-12 19:11:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:11:55,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:11:55,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 19:11:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:55,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:11:55,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:11:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 19:11:56,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:11:56,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952533375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:11:56,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:11:56,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-10-12 19:11:56,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589806179] [2024-10-12 19:11:56,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:11:56,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:11:56,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:11:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:11:56,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:11:56,052 INFO L87 Difference]: Start difference. First operand 636 states and 1073 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, (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) [2024-10-12 19:11:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:11:56,236 INFO L93 Difference]: Finished difference Result 1284 states and 2165 transitions. [2024-10-12 19:11:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:11:56,237 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, (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 89 [2024-10-12 19:11:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:11:56,241 INFO L225 Difference]: With dead ends: 1284 [2024-10-12 19:11:56,241 INFO L226 Difference]: Without dead ends: 655 [2024-10-12 19:11:56,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:11:56,246 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 100 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5466 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:11:56,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5466 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:11:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2024-10-12 19:11:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 636. [2024-10-12 19:11:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 504 states have (on average 1.7182539682539681) internal successors, (866), 524 states have internal predecessors, (866), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-10-12 19:11:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1073 transitions. [2024-10-12 19:11:56,275 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1073 transitions. Word has length 89 [2024-10-12 19:11:56,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:11:56,275 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1073 transitions. [2024-10-12 19:11:56,275 INFO L472 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, (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) [2024-10-12 19:11:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1073 transitions. [2024-10-12 19:11:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 19:11:56,279 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:11:56,279 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:11:56,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 19:11:56,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:56,480 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:11:56,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:11:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash 84760135, now seen corresponding path program 1 times [2024-10-12 19:11:56,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:11:56,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985698632] [2024-10-12 19:11:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:56,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:11:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:11:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 19:11:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-12 19:11:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:11:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 19:11:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-12 19:11:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 19:11:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-12 19:11:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:11:56,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:11:56,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985698632] [2024-10-12 19:11:56,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985698632] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:11:56,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241002605] [2024-10-12 19:11:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:56,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:56,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:11:56,742 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:11:56,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 19:11:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:56,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:11:56,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:11:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-12 19:11:57,016 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:11:57,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241002605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:11:57,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:11:57,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-12 19:11:57,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954859487] [2024-10-12 19:11:57,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:11:57,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:11:57,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:11:57,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:11:57,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 19:11:57,017 INFO L87 Difference]: Start difference. First operand 636 states and 1073 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-10-12 19:11:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:11:57,135 INFO L93 Difference]: Finished difference Result 1280 states and 2157 transitions. [2024-10-12 19:11:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:11:57,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 77 [2024-10-12 19:11:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:11:57,142 INFO L225 Difference]: With dead ends: 1280 [2024-10-12 19:11:57,142 INFO L226 Difference]: Without dead ends: 647 [2024-10-12 19:11:57,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-12 19:11:57,147 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 12 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:11:57,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2778 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:11:57,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-10-12 19:11:57,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2024-10-12 19:11:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-10-12 19:11:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2024-10-12 19:11:57,176 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 77 [2024-10-12 19:11:57,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:11:57,177 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2024-10-12 19:11:57,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-10-12 19:11:57,177 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2024-10-12 19:11:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 19:11:57,179 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:11:57,180 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:11:57,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 19:11:57,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:57,380 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:11:57,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:11:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1535905988, now seen corresponding path program 1 times [2024-10-12 19:11:57,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:11:57,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092206621] [2024-10-12 19:11:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:57,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:11:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:11:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:11:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-12 19:11:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:11:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-12 19:11:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 19:11:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-12 19:11:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-12 19:11:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:11:57,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:11:57,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092206621] [2024-10-12 19:11:57,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092206621] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:11:57,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402648630] [2024-10-12 19:11:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:57,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:57,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:11:57,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:11:57,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 19:11:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:57,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:11:57,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:11:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:11:58,018 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:11:58,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402648630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:11:58,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:11:58,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-10-12 19:11:58,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688214719] [2024-10-12 19:11:58,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:11:58,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:11:58,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:11:58,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:11:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:11:58,020 INFO L87 Difference]: Start difference. First operand 645 states and 1081 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), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-12 19:11:58,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:11:58,181 INFO L93 Difference]: Finished difference Result 1293 states and 2168 transitions. [2024-10-12 19:11:58,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:11:58,183 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), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2024-10-12 19:11:58,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:11:58,188 INFO L225 Difference]: With dead ends: 1293 [2024-10-12 19:11:58,188 INFO L226 Difference]: Without dead ends: 666 [2024-10-12 19:11:58,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:11:58,192 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 111 mSDsluCounter, 4526 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5454 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:11:58,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5454 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:11:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-10-12 19:11:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 645. [2024-10-12 19:11:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-10-12 19:11:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2024-10-12 19:11:58,214 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 78 [2024-10-12 19:11:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:11:58,214 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2024-10-12 19:11:58,215 INFO L472 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), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-12 19:11:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2024-10-12 19:11:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-12 19:11:58,217 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:11:58,217 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:11:58,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 19:11:58,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:58,418 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:11:58,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:11:58,419 INFO L85 PathProgramCache]: Analyzing trace with hash -383811464, now seen corresponding path program 1 times [2024-10-12 19:11:58,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:11:58,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502896011] [2024-10-12 19:11:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:58,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:11:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:58,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:11:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:58,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:11:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:58,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-12 19:11:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:58,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:58,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:11:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:59,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 19:11:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:59,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:11:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:59,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-12 19:11:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:59,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-12 19:11:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:59,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-12 19:11:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:59,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-12 19:11:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:11:59,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:11:59,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502896011] [2024-10-12 19:11:59,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502896011] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:11:59,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764582889] [2024-10-12 19:11:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:59,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:11:59,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:11:59,036 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:11:59,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 19:11:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:59,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:11:59,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:11:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 19:11:59,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:11:59,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764582889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:11:59,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:11:59,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-10-12 19:11:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390840516] [2024-10-12 19:11:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:11:59,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:11:59,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:11:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:11:59,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:11:59,375 INFO L87 Difference]: Start difference. First operand 645 states and 1081 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, (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) [2024-10-12 19:11:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:11:59,589 INFO L93 Difference]: Finished difference Result 1295 states and 2171 transitions. [2024-10-12 19:11:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:11:59,590 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, (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 90 [2024-10-12 19:11:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:11:59,597 INFO L225 Difference]: With dead ends: 1295 [2024-10-12 19:11:59,597 INFO L226 Difference]: Without dead ends: 668 [2024-10-12 19:11:59,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-12 19:11:59,600 INFO L432 NwaCegarLoop]: 918 mSDtfsCounter, 95 mSDsluCounter, 5414 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6332 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:11:59,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6332 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:11:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-10-12 19:11:59,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 645. [2024-10-12 19:11:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-10-12 19:11:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2024-10-12 19:11:59,622 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 90 [2024-10-12 19:11:59,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:11:59,622 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2024-10-12 19:11:59,622 INFO L472 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, (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) [2024-10-12 19:11:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2024-10-12 19:11:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 19:11:59,624 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:11:59,624 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:11:59,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 19:11:59,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-12 19:11:59,825 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:11:59,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:11:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash 378866343, now seen corresponding path program 1 times [2024-10-12 19:11:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:11:59,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052628923] [2024-10-12 19:11:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:11:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:11:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:11:59,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:11:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-12 19:12:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:12:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-12 19:12:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:12:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 19:12:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 19:12:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-12 19:12:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:12:00,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:00,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052628923] [2024-10-12 19:12:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052628923] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:00,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625637186] [2024-10-12 19:12:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:00,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:00,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:00,488 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:00,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 19:12:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:00,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:12:00,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 19:12:00,847 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:00,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625637186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:00,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:00,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-10-12 19:12:00,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537704612] [2024-10-12 19:12:00,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:00,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:12:00,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:00,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:12:00,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:12:00,850 INFO L87 Difference]: Start difference. First operand 645 states and 1081 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) [2024-10-12 19:12:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:01,071 INFO L93 Difference]: Finished difference Result 1295 states and 2171 transitions. [2024-10-12 19:12:01,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:12:01,072 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 [2024-10-12 19:12:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:01,079 INFO L225 Difference]: With dead ends: 1295 [2024-10-12 19:12:01,079 INFO L226 Difference]: Without dead ends: 668 [2024-10-12 19:12:01,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-12 19:12:01,084 INFO L432 NwaCegarLoop]: 918 mSDtfsCounter, 105 mSDsluCounter, 5402 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:01,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6320 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:12:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-10-12 19:12:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 645. [2024-10-12 19:12:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-10-12 19:12:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2024-10-12 19:12:01,106 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 91 [2024-10-12 19:12:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:01,106 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2024-10-12 19:12:01,106 INFO L472 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) [2024-10-12 19:12:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2024-10-12 19:12:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-12 19:12:01,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:01,108 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:01,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 19:12:01,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:01,309 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:01,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash -653020125, now seen corresponding path program 1 times [2024-10-12 19:12:01,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:01,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122219622] [2024-10-12 19:12:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:01,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:12:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-12 19:12:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-12 19:12:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-12 19:12:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-12 19:12:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:12:01,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122219622] [2024-10-12 19:12:01,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122219622] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013608318] [2024-10-12 19:12:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:01,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:01,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:01,655 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:01,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 19:12:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:01,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:12:01,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:12:02,055 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:02,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013608318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:02,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:02,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-10-12 19:12:02,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856672508] [2024-10-12 19:12:02,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:02,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:12:02,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:02,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:12:02,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:12:02,057 INFO L87 Difference]: Start difference. First operand 645 states and 1081 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) [2024-10-12 19:12:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:02,294 INFO L93 Difference]: Finished difference Result 1287 states and 2157 transitions. [2024-10-12 19:12:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:12:02,294 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 [2024-10-12 19:12:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:02,302 INFO L225 Difference]: With dead ends: 1287 [2024-10-12 19:12:02,302 INFO L226 Difference]: Without dead ends: 660 [2024-10-12 19:12:02,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-10-12 19:12:02,305 INFO L432 NwaCegarLoop]: 918 mSDtfsCounter, 115 mSDsluCounter, 5390 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6308 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:02,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6308 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:12:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-10-12 19:12:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 645. [2024-10-12 19:12:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-10-12 19:12:02,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2024-10-12 19:12:02,329 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 80 [2024-10-12 19:12:02,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:02,330 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2024-10-12 19:12:02,330 INFO L472 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) [2024-10-12 19:12:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2024-10-12 19:12:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 19:12:02,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:02,334 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:02,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 19:12:02,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 19:12:02,539 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:02,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:02,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1177552581, now seen corresponding path program 1 times [2024-10-12 19:12:02,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:02,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515581398] [2024-10-12 19:12:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:02,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:02,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:02,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:02,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:02,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:12:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-12 19:12:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 19:12:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:12:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-12 19:12:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-12 19:12:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 19:12:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515581398] [2024-10-12 19:12:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515581398] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878616404] [2024-10-12 19:12:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:03,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:03,076 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:03,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 19:12:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:12:03,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 19:12:03,357 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:03,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878616404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:03,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:03,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-12 19:12:03,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249292635] [2024-10-12 19:12:03,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:03,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:12:03,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:03,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:12:03,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:12:03,359 INFO L87 Difference]: Start difference. First operand 645 states and 1081 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) [2024-10-12 19:12:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:03,454 INFO L93 Difference]: Finished difference Result 1261 states and 2119 transitions. [2024-10-12 19:12:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:12:03,455 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 [2024-10-12 19:12:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:03,461 INFO L225 Difference]: With dead ends: 1261 [2024-10-12 19:12:03,461 INFO L226 Difference]: Without dead ends: 645 [2024-10-12 19:12:03,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:12:03,464 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 20 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:03,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2772 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:12:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-10-12 19:12:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2024-10-12 19:12:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.69921875) internal successors, (870), 532 states have internal predecessors, (870), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-10-12 19:12:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1076 transitions. [2024-10-12 19:12:03,485 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1076 transitions. Word has length 92 [2024-10-12 19:12:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:03,485 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1076 transitions. [2024-10-12 19:12:03,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (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) [2024-10-12 19:12:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1076 transitions. [2024-10-12 19:12:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 19:12:03,488 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:03,488 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:03,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 19:12:03,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 19:12:03,689 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:03,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash 886993538, now seen corresponding path program 1 times [2024-10-12 19:12:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:03,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368301253] [2024-10-12 19:12:03,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:03,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:04,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-12 19:12:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:04,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:04,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-12 19:12:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:04,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-12 19:12:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:04,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 19:12:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:04,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-12 19:12:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 19:12:04,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:04,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368301253] [2024-10-12 19:12:04,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368301253] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:04,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728624566] [2024-10-12 19:12:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:04,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:04,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:04,150 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:04,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 19:12:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:04,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:12:04,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 19:12:04,450 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:04,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728624566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:04,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:04,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-12 19:12:04,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582285325] [2024-10-12 19:12:04,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:04,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:12:04,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:04,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:12:04,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:12:04,452 INFO L87 Difference]: Start difference. First operand 645 states and 1076 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) [2024-10-12 19:12:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:04,640 INFO L93 Difference]: Finished difference Result 1285 states and 2154 transitions. [2024-10-12 19:12:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:12:04,641 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 93 [2024-10-12 19:12:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:04,646 INFO L225 Difference]: With dead ends: 1285 [2024-10-12 19:12:04,646 INFO L226 Difference]: Without dead ends: 725 [2024-10-12 19:12:04,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:12:04,649 INFO L432 NwaCegarLoop]: 889 mSDtfsCounter, 169 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:04,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2640 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:12:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-10-12 19:12:04,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 689. [2024-10-12 19:12:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 555 states have (on average 1.7171171171171171) internal successors, (953), 575 states have internal predecessors, (953), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-10-12 19:12:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1158 transitions. [2024-10-12 19:12:04,670 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1158 transitions. Word has length 93 [2024-10-12 19:12:04,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:04,671 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1158 transitions. [2024-10-12 19:12:04,671 INFO L472 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) [2024-10-12 19:12:04,671 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1158 transitions. [2024-10-12 19:12:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-12 19:12:04,673 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:04,673 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:04,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 19:12:04,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 19:12:04,874 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:04,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:04,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1005732585, now seen corresponding path program 1 times [2024-10-12 19:12:04,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:04,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289771517] [2024-10-12 19:12:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:04,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:04,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 19:12:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:12:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 19:12:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-12 19:12:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:12:05,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:05,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289771517] [2024-10-12 19:12:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289771517] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:05,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894164618] [2024-10-12 19:12:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:05,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:05,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:05,093 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:05,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 19:12:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:12:05,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:12:05,397 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:05,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894164618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:05,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:05,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-12 19:12:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732389155] [2024-10-12 19:12:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:05,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:12:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:12:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:12:05,398 INFO L87 Difference]: Start difference. First operand 689 states and 1158 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) [2024-10-12 19:12:05,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:05,543 INFO L93 Difference]: Finished difference Result 1281 states and 2144 transitions. [2024-10-12 19:12:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:12:05,544 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 [2024-10-12 19:12:05,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:05,549 INFO L225 Difference]: With dead ends: 1281 [2024-10-12 19:12:05,549 INFO L226 Difference]: Without dead ends: 721 [2024-10-12 19:12:05,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:12:05,552 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 89 mSDsluCounter, 4556 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5485 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:05,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5485 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:12:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-10-12 19:12:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 701. [2024-10-12 19:12:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-10-12 19:12:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2024-10-12 19:12:05,570 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 82 [2024-10-12 19:12:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:05,571 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2024-10-12 19:12:05,571 INFO L472 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) [2024-10-12 19:12:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2024-10-12 19:12:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-12 19:12:05,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:05,573 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:05,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 19:12:05,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 19:12:05,774 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:05,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:05,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1816955454, now seen corresponding path program 1 times [2024-10-12 19:12:05,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:05,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035989632] [2024-10-12 19:12:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:05,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:12:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 19:12:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 19:12:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-12 19:12:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 19:12:06,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035989632] [2024-10-12 19:12:06,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035989632] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:06,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65935845] [2024-10-12 19:12:06,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:06,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:06,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:06,122 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:06,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 19:12:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:12:06,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:12:06,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:06,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65935845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:06,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:06,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-10-12 19:12:06,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544007014] [2024-10-12 19:12:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:06,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:12:06,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:12:06,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:12:06,463 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-10-12 19:12:06,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:06,618 INFO L93 Difference]: Finished difference Result 1289 states and 2157 transitions. [2024-10-12 19:12:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:12:06,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 83 [2024-10-12 19:12:06,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:06,624 INFO L225 Difference]: With dead ends: 1289 [2024-10-12 19:12:06,624 INFO L226 Difference]: Without dead ends: 729 [2024-10-12 19:12:06,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-10-12 19:12:06,627 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 100 mSDsluCounter, 4544 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:06,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5473 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:12:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-10-12 19:12:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 701. [2024-10-12 19:12:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-10-12 19:12:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2024-10-12 19:12:06,648 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 83 [2024-10-12 19:12:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:06,648 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2024-10-12 19:12:06,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-10-12 19:12:06,649 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2024-10-12 19:12:06,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 19:12:06,651 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:06,651 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:06,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 19:12:06,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:06,852 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:06,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:06,852 INFO L85 PathProgramCache]: Analyzing trace with hash 440502268, now seen corresponding path program 1 times [2024-10-12 19:12:06,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:06,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155893814] [2024-10-12 19:12:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:06,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:06,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 19:12:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 19:12:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-12 19:12:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 19:12:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 19:12:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 19:12:07,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:07,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155893814] [2024-10-12 19:12:07,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155893814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724938653] [2024-10-12 19:12:07,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:07,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:07,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:07,378 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:07,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 19:12:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:07,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 1480 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:12:07,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 19:12:07,759 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:07,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724938653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:07,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:07,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-12 19:12:07,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530577444] [2024-10-12 19:12:07,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:07,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:12:07,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:12:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-10-12 19:12:07,762 INFO L87 Difference]: Start difference. First operand 701 states and 1176 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) [2024-10-12 19:12:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:07,945 INFO L93 Difference]: Finished difference Result 1291 states and 2159 transitions. [2024-10-12 19:12:07,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:12:07,946 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 [2024-10-12 19:12:07,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:07,950 INFO L225 Difference]: With dead ends: 1291 [2024-10-12 19:12:07,950 INFO L226 Difference]: Without dead ends: 731 [2024-10-12 19:12:07,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-10-12 19:12:07,953 INFO L432 NwaCegarLoop]: 919 mSDtfsCounter, 96 mSDsluCounter, 5421 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:07,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6340 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:12:07,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-10-12 19:12:07,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 701. [2024-10-12 19:12:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-10-12 19:12:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2024-10-12 19:12:07,976 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 95 [2024-10-12 19:12:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:07,976 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2024-10-12 19:12:07,976 INFO L472 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) [2024-10-12 19:12:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2024-10-12 19:12:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 19:12:07,978 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:07,979 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:07,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 19:12:08,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 19:12:08,179 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:08,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:08,180 INFO L85 PathProgramCache]: Analyzing trace with hash -802159954, now seen corresponding path program 1 times [2024-10-12 19:12:08,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:08,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188621250] [2024-10-12 19:12:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:08,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 19:12:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 19:12:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 19:12:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-12 19:12:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 19:12:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 19:12:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 19:12:08,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:08,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188621250] [2024-10-12 19:12:08,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188621250] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:08,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535203586] [2024-10-12 19:12:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:08,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:08,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:08,618 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:08,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 19:12:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:08,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:12:08,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 19:12:08,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:08,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535203586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:08,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:08,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-12 19:12:08,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385136887] [2024-10-12 19:12:08,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:08,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:12:08,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:08,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:12:08,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:12:08,887 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (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) [2024-10-12 19:12:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:08,961 INFO L93 Difference]: Finished difference Result 1333 states and 2238 transitions. [2024-10-12 19:12:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:12:08,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (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 95 [2024-10-12 19:12:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:08,967 INFO L225 Difference]: With dead ends: 1333 [2024-10-12 19:12:08,967 INFO L226 Difference]: Without dead ends: 701 [2024-10-12 19:12:08,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:12:08,970 INFO L432 NwaCegarLoop]: 930 mSDtfsCounter, 2 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:08,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2781 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:12:08,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-10-12 19:12:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2024-10-12 19:12:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7092198581560283) internal successors, (964), 586 states have internal predecessors, (964), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-10-12 19:12:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1173 transitions. [2024-10-12 19:12:08,989 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1173 transitions. Word has length 95 [2024-10-12 19:12:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:08,989 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1173 transitions. [2024-10-12 19:12:08,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (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) [2024-10-12 19:12:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1173 transitions. [2024-10-12 19:12:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-12 19:12:08,992 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:08,992 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:09,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 19:12:09,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 19:12:09,193 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:09,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1042106081, now seen corresponding path program 1 times [2024-10-12 19:12:09,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:09,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791923301] [2024-10-12 19:12:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:09,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 19:12:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-12 19:12:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-12 19:12:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-12 19:12:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 19:12:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 19:12:09,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:09,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791923301] [2024-10-12 19:12:09,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791923301] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:09,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856788388] [2024-10-12 19:12:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:09,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:09,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:09,612 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:09,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 19:12:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:09,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:12:09,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 19:12:09,937 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:09,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856788388] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:09,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:09,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2024-10-12 19:12:09,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988305874] [2024-10-12 19:12:09,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:09,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:12:09,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:12:09,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:12:09,939 INFO L87 Difference]: Start difference. First operand 701 states and 1173 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) [2024-10-12 19:12:10,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:10,087 INFO L93 Difference]: Finished difference Result 1283 states and 2143 transitions. [2024-10-12 19:12:10,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:12:10,088 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 [2024-10-12 19:12:10,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:10,093 INFO L225 Difference]: With dead ends: 1283 [2024-10-12 19:12:10,093 INFO L226 Difference]: Without dead ends: 723 [2024-10-12 19:12:10,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:12:10,096 INFO L432 NwaCegarLoop]: 916 mSDtfsCounter, 106 mSDsluCounter, 5394 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6310 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:10,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6310 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:12:10,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-10-12 19:12:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 701. [2024-10-12 19:12:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7092198581560283) internal successors, (964), 586 states have internal predecessors, (964), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-10-12 19:12:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1173 transitions. [2024-10-12 19:12:10,115 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1173 transitions. Word has length 96 [2024-10-12 19:12:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:10,115 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1173 transitions. [2024-10-12 19:12:10,116 INFO L472 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) [2024-10-12 19:12:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1173 transitions. [2024-10-12 19:12:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-12 19:12:10,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:10,118 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:10,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-12 19:12:10,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 19:12:10,319 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:10,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash 407035319, now seen corresponding path program 1 times [2024-10-12 19:12:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:10,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229367496] [2024-10-12 19:12:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:12:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-12 19:12:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-12 19:12:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-12 19:12:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-12 19:12:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 19:12:10,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:10,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229367496] [2024-10-12 19:12:10,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229367496] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:10,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498048953] [2024-10-12 19:12:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:10,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:10,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:10,744 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:10,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 19:12:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:11,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 19:12:11,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 19:12:11,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:11,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498048953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:11,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:11,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-10-12 19:12:11,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720431798] [2024-10-12 19:12:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:11,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 19:12:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 19:12:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:12:11,168 INFO L87 Difference]: Start difference. First operand 701 states and 1173 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-12 19:12:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:14,154 INFO L93 Difference]: Finished difference Result 2438 states and 4115 transitions. [2024-10-12 19:12:14,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 19:12:14,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2024-10-12 19:12:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:14,163 INFO L225 Difference]: With dead ends: 2438 [2024-10-12 19:12:14,164 INFO L226 Difference]: Without dead ends: 1882 [2024-10-12 19:12:14,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:12:14,166 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 3086 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3281 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 4138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:14,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3281 Valid, 1254 Invalid, 4138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-12 19:12:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2024-10-12 19:12:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1715. [2024-10-12 19:12:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1376 states have (on average 1.7005813953488371) internal successors, (2340), 1414 states have internal predecessors, (2340), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2024-10-12 19:12:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2899 transitions. [2024-10-12 19:12:14,231 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2899 transitions. Word has length 97 [2024-10-12 19:12:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:14,231 INFO L471 AbstractCegarLoop]: Abstraction has 1715 states and 2899 transitions. [2024-10-12 19:12:14,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-12 19:12:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2899 transitions. [2024-10-12 19:12:14,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-12 19:12:14,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:14,236 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 19:12:14,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-12 19:12:14,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 19:12:14,437 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:14,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash 636098307, now seen corresponding path program 1 times [2024-10-12 19:12:14,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:14,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108943783] [2024-10-12 19:12:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:14,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:14,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:14,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:14,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:14,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:14,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:14,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:12:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:14,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:12:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:12:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 19:12:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:12:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-12 19:12:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-12 19:12:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:12:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 19:12:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:12:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-12 19:12:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-12 19:12:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-12 19:12:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-12 19:12:15,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108943783] [2024-10-12 19:12:15,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108943783] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602813841] [2024-10-12 19:12:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:15,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:15,462 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:15,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 19:12:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:15,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 2162 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:12:15,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 19:12:15,862 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:15,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602813841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:15,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:15,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2024-10-12 19:12:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021998742] [2024-10-12 19:12:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:15,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:12:15,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:12:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:12:15,864 INFO L87 Difference]: Start difference. First operand 1715 states and 2899 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-10-12 19:12:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:16,013 INFO L93 Difference]: Finished difference Result 4838 states and 8274 transitions. [2024-10-12 19:12:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:12:16,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 170 [2024-10-12 19:12:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:16,035 INFO L225 Difference]: With dead ends: 4838 [2024-10-12 19:12:16,035 INFO L226 Difference]: Without dead ends: 3269 [2024-10-12 19:12:16,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:12:16,045 INFO L432 NwaCegarLoop]: 950 mSDtfsCounter, 951 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:16,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1857 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:12:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2024-10-12 19:12:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3250. [2024-10-12 19:12:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 2605 states have (on average 1.6998080614203455) internal successors, (4428), 2672 states have internal predecessors, (4428), 515 states have call successors, (515), 123 states have call predecessors, (515), 129 states have return successors, (591), 484 states have call predecessors, (591), 509 states have call successors, (591) [2024-10-12 19:12:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 5534 transitions. [2024-10-12 19:12:16,213 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 5534 transitions. Word has length 170 [2024-10-12 19:12:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:16,213 INFO L471 AbstractCegarLoop]: Abstraction has 3250 states and 5534 transitions. [2024-10-12 19:12:16,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-10-12 19:12:16,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 5534 transitions. [2024-10-12 19:12:16,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-12 19:12:16,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:16,219 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:16,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-12 19:12:16,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:16,419 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:16,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2080328430, now seen corresponding path program 1 times [2024-10-12 19:12:16,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:16,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925720682] [2024-10-12 19:12:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:16,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-12 19:12:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-12 19:12:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:12:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 19:12:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:12:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-12 19:12:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-12 19:12:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-12 19:12:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 19:12:16,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:16,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925720682] [2024-10-12 19:12:16,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925720682] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:16,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559769897] [2024-10-12 19:12:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:16,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:16,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:16,933 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:16,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 19:12:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:17,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 1587 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 19:12:17,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 19:12:17,323 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:17,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559769897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:17,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:17,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-12 19:12:17,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528410227] [2024-10-12 19:12:17,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:17,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:12:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:12:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:12:17,325 INFO L87 Difference]: Start difference. First operand 3250 states and 5534 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-10-12 19:12:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:17,519 INFO L93 Difference]: Finished difference Result 7931 states and 13560 transitions. [2024-10-12 19:12:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:12:17,520 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2024-10-12 19:12:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:17,549 INFO L225 Difference]: With dead ends: 7931 [2024-10-12 19:12:17,549 INFO L226 Difference]: Without dead ends: 4826 [2024-10-12 19:12:17,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:12:17,567 INFO L432 NwaCegarLoop]: 1254 mSDtfsCounter, 907 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:17,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 3042 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:12:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2024-10-12 19:12:17,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4822. [2024-10-12 19:12:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 3885 states have (on average 1.6813384813384813) internal successors, (6532), 3952 states have internal predecessors, (6532), 735 states have call successors, (735), 195 states have call predecessors, (735), 201 states have return successors, (933), 704 states have call predecessors, (933), 725 states have call successors, (933) [2024-10-12 19:12:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 8200 transitions. [2024-10-12 19:12:17,832 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 8200 transitions. Word has length 121 [2024-10-12 19:12:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:17,832 INFO L471 AbstractCegarLoop]: Abstraction has 4822 states and 8200 transitions. [2024-10-12 19:12:17,833 INFO L472 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-10-12 19:12:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 8200 transitions. [2024-10-12 19:12:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-12 19:12:17,840 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:17,840 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 19:12:17,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-12 19:12:18,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:18,041 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:18,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:18,041 INFO L85 PathProgramCache]: Analyzing trace with hash 246726885, now seen corresponding path program 1 times [2024-10-12 19:12:18,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:18,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820099076] [2024-10-12 19:12:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:18,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 19:12:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:12:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:12:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:12:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:12:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 19:12:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:12:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-12 19:12:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-12 19:12:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:12:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 19:12:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:12:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-12 19:12:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-12 19:12:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-12 19:12:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-12 19:12:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820099076] [2024-10-12 19:12:18,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820099076] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:18,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439066539] [2024-10-12 19:12:18,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:18,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:18,937 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:18,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-12 19:12:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:19,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:12:19,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-12 19:12:19,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:12:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-12 19:12:19,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439066539] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:12:19,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:12:19,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 19 [2024-10-12 19:12:19,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222774070] [2024-10-12 19:12:19,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:12:19,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 19:12:19,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:19,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 19:12:19,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-12 19:12:19,808 INFO L87 Difference]: Start difference. First operand 4822 states and 8200 transitions. Second operand has 19 states, 18 states have (on average 8.444444444444445) internal successors, (152), 14 states have internal predecessors, (152), 7 states have call successors, (38), 9 states have call predecessors, (38), 7 states have return successors, (37), 8 states have call predecessors, (37), 7 states have call successors, (37) [2024-10-12 19:12:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:52,887 INFO L93 Difference]: Finished difference Result 27214 states and 49417 transitions. [2024-10-12 19:12:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-10-12 19:12:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.444444444444445) internal successors, (152), 14 states have internal predecessors, (152), 7 states have call successors, (38), 9 states have call predecessors, (38), 7 states have return successors, (37), 8 states have call predecessors, (37), 7 states have call successors, (37) Word has length 171 [2024-10-12 19:12:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:53,011 INFO L225 Difference]: With dead ends: 27214 [2024-10-12 19:12:53,011 INFO L226 Difference]: Without dead ends: 22360 [2024-10-12 19:12:53,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 422 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2766 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1370, Invalid=6640, Unknown=0, NotChecked=0, Total=8010 [2024-10-12 19:12:53,065 INFO L432 NwaCegarLoop]: 834 mSDtfsCounter, 12056 mSDsluCounter, 8568 mSDsCounter, 0 mSdLazyCounter, 22254 mSolverCounterSat, 4126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12176 SdHoareTripleChecker+Valid, 9402 SdHoareTripleChecker+Invalid, 26380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4126 IncrementalHoareTripleChecker+Valid, 22254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:53,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12176 Valid, 9402 Invalid, 26380 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4126 Valid, 22254 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2024-10-12 19:12:53,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22360 states. [2024-10-12 19:12:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22360 to 14145. [2024-10-12 19:12:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14145 states, 11211 states have (on average 1.6168049237356168) internal successors, (18126), 11410 states have internal predecessors, (18126), 2250 states have call successors, (2250), 625 states have call predecessors, (2250), 683 states have return successors, (3476), 2175 states have call predecessors, (3476), 2228 states have call successors, (3476) [2024-10-12 19:12:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14145 states to 14145 states and 23852 transitions. [2024-10-12 19:12:55,960 INFO L78 Accepts]: Start accepts. Automaton has 14145 states and 23852 transitions. Word has length 171 [2024-10-12 19:12:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:12:55,960 INFO L471 AbstractCegarLoop]: Abstraction has 14145 states and 23852 transitions. [2024-10-12 19:12:55,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.444444444444445) internal successors, (152), 14 states have internal predecessors, (152), 7 states have call successors, (38), 9 states have call predecessors, (38), 7 states have return successors, (37), 8 states have call predecessors, (37), 7 states have call successors, (37) [2024-10-12 19:12:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 14145 states and 23852 transitions. [2024-10-12 19:12:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-12 19:12:55,967 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:12:55,968 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:12:55,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-12 19:12:56,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:56,169 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:12:56,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:12:56,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1029118167, now seen corresponding path program 1 times [2024-10-12 19:12:56,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:12:56,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167906128] [2024-10-12 19:12:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:12:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:12:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:12:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:12:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:12:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-12 19:12:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 19:12:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:12:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:12:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 19:12:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:12:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 19:12:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-12 19:12:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-12 19:12:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:12:56,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:12:56,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167906128] [2024-10-12 19:12:56,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167906128] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:12:56,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496207122] [2024-10-12 19:12:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:12:56,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:12:56,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:12:56,867 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:12:56,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-12 19:12:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:12:57,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 19:12:57,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:12:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:12:57,238 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:12:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496207122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:12:57,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:12:57,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2024-10-12 19:12:57,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121928061] [2024-10-12 19:12:57,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:12:57,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:12:57,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:12:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:12:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:12:57,240 INFO L87 Difference]: Start difference. First operand 14145 states and 23852 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-10-12 19:12:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:12:59,765 INFO L93 Difference]: Finished difference Result 28440 states and 47925 transitions. [2024-10-12 19:12:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:12:59,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2024-10-12 19:12:59,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:12:59,841 INFO L225 Difference]: With dead ends: 28440 [2024-10-12 19:12:59,841 INFO L226 Difference]: Without dead ends: 14308 [2024-10-12 19:12:59,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:12:59,901 INFO L432 NwaCegarLoop]: 934 mSDtfsCounter, 122 mSDsluCounter, 4535 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:12:59,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5469 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:12:59,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14308 states. [2024-10-12 19:13:02,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14308 to 14138. [2024-10-12 19:13:02,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14138 states, 11204 states have (on average 1.6163870046411997) internal successors, (18110), 11403 states have internal predecessors, (18110), 2250 states have call successors, (2250), 625 states have call predecessors, (2250), 683 states have return successors, (3476), 2175 states have call predecessors, (3476), 2228 states have call successors, (3476) [2024-10-12 19:13:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14138 states to 14138 states and 23836 transitions. [2024-10-12 19:13:03,097 INFO L78 Accepts]: Start accepts. Automaton has 14138 states and 23836 transitions. Word has length 123 [2024-10-12 19:13:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:13:03,097 INFO L471 AbstractCegarLoop]: Abstraction has 14138 states and 23836 transitions. [2024-10-12 19:13:03,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-10-12 19:13:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 14138 states and 23836 transitions. [2024-10-12 19:13:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 19:13:03,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:13:03,102 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:13:03,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-12 19:13:03,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:13:03,304 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:13:03,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:13:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1305175206, now seen corresponding path program 1 times [2024-10-12 19:13:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:13:03,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958511570] [2024-10-12 19:13:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:13:03,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:13:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:13:03,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:13:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat